diff --git a/Cargo.lock b/Cargo.lock
index 1723668..af61765 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -18,7 +18,7 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.20"
+version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -27,23 +27,11 @@ version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "escargot 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "predicates 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "predicates 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "predicates-tree 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "assert_fs"
-version = "0.11.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "globwalk 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "predicates 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "predicates-tree 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "atty"
 version = "0.2.13"
@@ -63,14 +51,6 @@ name = "bitflags"
 version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "bstr"
-version = "0.2.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "c2-chacha"
 version = "0.2.3"
@@ -98,14 +78,6 @@ dependencies = [
  "vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "crossbeam-channel"
-version = "0.3.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "crossbeam-deque"
 version = "0.7.2"
@@ -176,19 +148,6 @@ dependencies = [
  "serde_json 1.0.41 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "float-cmp"
-version = "0.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "num-traits 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "fnv"
-version = "1.0.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "getrandom"
 version = "0.1.13"
@@ -199,27 +158,6 @@ dependencies = [
  "wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "globset"
-version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "bstr 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "globwalk"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "ignore 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "heck"
 version = "0.3.1"
@@ -236,23 +174,6 @@ dependencies = [
  "libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "ignore"
-version = "0.4.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "crossbeam-channel 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "globset 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "same-file 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "itoa"
 version = "0.4.4"
@@ -306,19 +227,6 @@ dependencies = [
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "normalize-line-endings"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "num-traits"
-version = "0.2.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "num_cpus"
 version = "1.11.1"
@@ -335,14 +243,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "predicates"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "float-cmp 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "normalize-line-endings 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -491,14 +396,6 @@ name = "ryu"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "same-file"
-version = "1.0.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "scopeguard"
 version = "1.0.0"
@@ -508,9 +405,8 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 name = "sd"
 version = "0.6.5"
 dependencies = [
- "anyhow 1.0.20 (registry+https://github.com/rust-lang/crates.io-index)",
+ "anyhow 1.0.22 (registry+https://github.com/rust-lang/crates.io-index)",
  "assert_cmd 0.11.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "assert_fs 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "man 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memmap 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rayon 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -656,16 +552,6 @@ name = "vec_map"
 version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "walkdir"
-version = "2.2.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "same-file 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "wasi"
 version = "0.7.0"
@@ -685,14 +571,6 @@ name = "winapi-i686-pc-windows-gnu"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "winapi-util"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "winapi-x86_64-pc-windows-gnu"
 version = "0.4.0"
@@ -701,17 +579,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [metadata]
 "checksum aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)" = "58fb5e95d83b38284460a5fda7d6470aa0b8844d283a0b614b8535e880800d2d"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
-"checksum anyhow 1.0.20 (registry+https://github.com/rust-lang/crates.io-index)" = "768155103fe6b9bf51090758e0657aa34dde4f6618f32ba1c3e45be3b29a0709"
+"checksum anyhow 1.0.22 (registry+https://github.com/rust-lang/crates.io-index)" = "e19f23ab207147bbdbcdfa7f7e4ca5e84963d79bae3937074682177ab9150968"
 "checksum assert_cmd 0.11.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2dc477793bd82ec39799b6f6b3df64938532fdf2ab0d49ef817eac65856a5a1e"
-"checksum assert_fs 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "4ce6ba957da497523c08f8e0bd0f2e038d23ad6a3f7a391ed9d4afa9314838c0"
 "checksum atty 0.2.13 (registry+https://github.com/rust-lang/crates.io-index)" = "1803c647a3ec87095e7ae7acfca019e98de5ec9a7d01343f611cf3152ed71a90"
 "checksum autocfg 0.1.7 (registry+https://github.com/rust-lang/crates.io-index)" = "1d49d90015b3c36167a20fe2810c5cd875ad504b39cff3d4eae7977e6b7c1cb2"
 "checksum bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
-"checksum bstr 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8d6c2c5b58ab920a4f5aeaaca34b4488074e8cc7596af94e6f8c6ff247c60245"
 "checksum c2-chacha 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "214238caa1bf3a496ec3392968969cab8549f96ff30652c9e56885329315f6bb"
 "checksum cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
 "checksum clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5067f5bb2d80ef5d68b4c87db81601f0b75bca627bc2ef76b141d7b846a3c6d9"
-"checksum crossbeam-channel 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "c8ec7fcd21571dc78f96cc96243cab8d8f035247c3efd16c687be154c3fa9efa"
 "checksum crossbeam-deque 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c3aa945d63861bfe624b55d153a39684da1e8c0bc8fba932f7ee3a3c16cea3ca"
 "checksum crossbeam-epoch 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "5064ebdbf05ce3cb95e45c8b086f72263f4166b29b97f6baff7ef7fe047b55ac"
 "checksum crossbeam-queue 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7c979cd6cfe72335896575c6b5688da489e420d36a27a0b9eb0c73db574b4a4b"
@@ -720,14 +595,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "524cbf6897b527295dff137cec09ecf3a05f4fddffd7dfcd1585403449e74198"
 "checksum either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "bb1f6b1ce1c140482ea30ddd3335fc0024ac7ee112895426e0a629a6c20adfe3"
 "checksum escargot 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ceb9adbf9874d5d028b5e4c5739d22b71988252b25c9c98fe7cf9738bee84597"
-"checksum float-cmp 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "134a8fa843d80a51a5b77d36d42bc2def9edcb0262c914861d08129fd1926600"
-"checksum fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2fad85553e09a6f881f739c29f0b00b0f01357c743266d478b68951ce23285f3"
 "checksum getrandom 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)" = "e7db7ca94ed4cd01190ceee0d8a8052f08a247aa1b469a7f68c6a3b71afcf407"
-"checksum globset 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "925aa2cac82d8834e2b2a4415b6f6879757fb5c0928fc445ae76461a12eed8f2"
-"checksum globwalk 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "89fa2e29859da05acd066bd45996f05c271b271d7ec4a781f909682328f65d25"
 "checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
 "checksum hermit-abi 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "307c3c9f937f38e3534b1d6447ecf090cafcc9744e4a6360e8b037b2cf5af120"
-"checksum ignore 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "0ec16832258409d571aaef8273f3c3cc5b060d784e159d1a0f3b0017308f84a7"
 "checksum itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
 "checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 "checksum libc 0.2.65 (registry+https://github.com/rust-lang/crates.io-index)" = "1a31a0627fdf1f6a39ec0dd577e101440b7db22672c0901fe00a9a6fbb5c24e8"
@@ -736,11 +606,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "88579771288728879b57485cc7d6b07d648c9f0141eb955f8ab7f9d45394468e"
 "checksum memmap 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6585fd95e7bb50d6cc31e20d4cf9afb4e2ba16c5846fc76793f11218da9c475b"
 "checksum memoffset 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "75189eb85871ea5c2e2c15abbdd541185f63b408415e5051f5cac122d8c774b9"
-"checksum normalize-line-endings 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "2e0a1a39eab95caf4f5556da9289b9e68f0aafac901b2ce80daaf020d3b733a8"
-"checksum num-traits 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)" = "443c53b3c3531dfcbfa499d8893944db78474ad7a1d87fa2d94d1a2231693ac6"
 "checksum num_cpus 1.11.1 (registry+https://github.com/rust-lang/crates.io-index)" = "76dac5ed2a876980778b8b85f75a71b6cbf0db0b1232ee12f826bccb00d09d72"
 "checksum ppv-lite86 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "74490b50b9fbe561ac330df47c08f3f33073d2d00c150f719147d7c54522fa1b"
-"checksum predicates 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "53e09015b0d3f5a0ec2d4428f7559bb7b3fff341b4e159fedd1d57fac8b939ff"
+"checksum predicates 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a9bfe52247e5cc9b2f943682a85a5549fb9662245caf094504e69a2f03fe64d4"
 "checksum predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "06075c3a3e92559ff8929e7a280684489ea27fe44805174c3ebd9328dcb37178"
 "checksum predicates-tree 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8e63c4859013b38a76eca2414c64911fba30def9e3202ac461a2d22831220124"
 "checksum proc-macro-error 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "aeccfe4d5d8ea175d5f0e4a2ad0637e0f4121d63bd99d356fb1f39ab2e7c6097"
@@ -759,7 +627,6 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum roff 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e33e4fb37ba46888052c763e4ec2acfedd8f00f62897b630cadb6298b833675e"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum ryu 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bfa8506c1de11c9c4e4c38863ccbe02a305c8188e85a05a784c9e11e1c3910c8"
-"checksum same-file 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "585e8ddcedc187886a30fa705c47985c3fa88d06624095856b36ca0b82ff4421"
 "checksum scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b42e15e59b18a828bbf5c58ea01debb36b9b096346de35d941dcb89009f24a0d"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
@@ -779,9 +646,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum unicode-width 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "7007dbd421b92cc6e28410fe7362e2e0a2503394908f417b68ec8d1c364c4e20"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
-"checksum walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)" = "9658c94fa8b940eab2250bd5a457f9c48b748420d71293b165c8cdbe2f55f71e"
 "checksum wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b89c3ce4ce14bdc6fb6beaf9ec7928ca331de5df7e5ea278375642a2f478570d"
 "checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
 "checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
-"checksum winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7168bab6e1daee33b4557efd0e95d5ca70a03706d39fa5f3fe7a236f584b03c9"
 "checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
diff --git a/Cargo.toml b/Cargo.toml
index 5c400e6..c1628f7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -18,11 +18,10 @@ rayon = "1.2.0"
 unescape = "0.1.0"
 memmap = "0.7.0"
 tempfile = "3.1.0"
-anyhow = "1.0.20"
+anyhow = "1.0.22"
 
 [dev-dependencies]
 assert_cmd = "0.11.1"
-assert_fs = "0.11.3"
 
 [build-dependencies]
 structopt = "0.3.4"
diff --git a/tests/cli.rs b/tests/cli.rs
index 39aab05..20934b8 100644
--- a/tests/cli.rs
+++ b/tests/cli.rs
@@ -1,29 +1,32 @@
 use anyhow::Result;
 use assert_cmd::prelude::*;
-use assert_fs::prelude::*;
-use std::process::Command;
+use std::{io::prelude::*, process::Command};
 
 fn sd() -> Command {
     Command::cargo_bin(env!("CARGO_PKG_NAME")).expect("Error invoking sd")
 }
 
+fn assert_file(path: &std::path::Path, content: &str) {
+    assert_eq!(content, std::fs::read_to_string(path).unwrap());
+}
+
 #[test]
 fn in_place() -> Result<()> {
-    let file = assert_fs::NamedTempFile::new("test")?;
-    file.write_str("abc123def")?;
+    let mut file = tempfile::NamedTempFile::new()?;
+    file.write(b"abc123def")?;
 
-    let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
-    cmd.args(&["abc\\d+", "", file.path().to_str().unwrap()]);
-    cmd.assert().success();
-    file.assert("def");
+    sd().args(&["abc\\d+", "", file.path().to_str().unwrap()])
+        .assert()
+        .success();
+    assert_file(file.path(), "def");
 
     Ok(())
 }
 
 #[test]
 fn replace_into_stdout() -> Result<()> {
-    let file = assert_fs::NamedTempFile::new("test")?;
-    file.write_str("abc123def")?;
+    let mut file = tempfile::NamedTempFile::new()?;
+    file.write(b"abc123def")?;
 
     #[rustfmt::skip]
     sd()
@@ -32,7 +35,7 @@ fn replace_into_stdout() -> Result<()> {
         .success()
         .stdout("def");
 
-    file.assert("abc123def");
+    assert_file(file.path(), "abc123def");
 
     Ok(())
 }