[INFO] updating cached repository NotLeet/rust-file-manipulation
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/NotLeet/rust-file-manipulation
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/NotLeet/rust-file-manipulation" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/NotLeet/rust-file-manipulation"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/NotLeet/rust-file-manipulation'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/NotLeet/rust-file-manipulation" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/NotLeet/rust-file-manipulation"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/NotLeet/rust-file-manipulation'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c75de95ac165463be89515ba8807d99d1159fe37
[INFO] sha for GitHub repo NotLeet/rust-file-manipulation: c75de95ac165463be89515ba8807d99d1159fe37
[INFO] validating manifest of NotLeet/rust-file-manipulation on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of NotLeet/rust-file-manipulation on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing NotLeet/rust-file-manipulation
[INFO] finished frobbing NotLeet/rust-file-manipulation
[INFO] frobbed toml for NotLeet/rust-file-manipulation written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/NotLeet/rust-file-manipulation/Cargo.toml
[INFO] started frobbing NotLeet/rust-file-manipulation
[INFO] finished frobbing NotLeet/rust-file-manipulation
[INFO] frobbed toml for NotLeet/rust-file-manipulation written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/NotLeet/rust-file-manipulation/Cargo.toml
[INFO] crate NotLeet/rust-file-manipulation has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing NotLeet/rust-file-manipulation against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/NotLeet/rust-file-manipulation:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 03a73bf5a7603ba9a138fa067ec6ba315a4da6637919d1aea1b7ade8f4ffa0a3
[INFO] running `"docker" "start" "-a" "03a73bf5a7603ba9a138fa067ec6ba315a4da6637919d1aea1b7ade8f4ffa0a3"`
[INFO] [stderr]    Compiling read_file v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/main.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |         Ok(expr) => {
[INFO] [stderr]    |            ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/main.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Err(err) => {
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_path`
[INFO] [stderr]   --> src/main.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn get_file_number(file_path: &PathBuf) -> i32 {
[INFO] [stderr]    |                    ^^^^^^^^^ help: consider prefixing with an underscore: `_file_path`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_file_number`
[INFO] [stderr]   --> src/main.rs:81:1
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn get_file_number(file_path: &PathBuf) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "03a73bf5a7603ba9a138fa067ec6ba315a4da6637919d1aea1b7ade8f4ffa0a3"`
[INFO] running `"docker" "rm" "-f" "03a73bf5a7603ba9a138fa067ec6ba315a4da6637919d1aea1b7ade8f4ffa0a3"`
[INFO] [stdout] 03a73bf5a7603ba9a138fa067ec6ba315a4da6637919d1aea1b7ade8f4ffa0a3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/NotLeet/rust-file-manipulation:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 9ad5d71cbf11e96ab3bfe983d157c705581ccc00ade632c26abbcaf6aea8bcc3
[INFO] running `"docker" "start" "-a" "9ad5d71cbf11e96ab3bfe983d157c705581ccc00ade632c26abbcaf6aea8bcc3"`
[INFO] [stderr]    Compiling read_file v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/main.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 20 |         Ok(expr) => {
[INFO] [stderr]    |            ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/main.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |         Err(err) => {
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `file_path`
[INFO] [stderr]   --> src/main.rs:81:20
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn get_file_number(file_path: &PathBuf) -> i32 {
[INFO] [stderr]    |                    ^^^^^^^^^ help: consider prefixing with an underscore: `_file_path`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_file_number`
[INFO] [stderr]   --> src/main.rs:81:1
[INFO] [stderr]    |
[INFO] [stderr] 81 | fn get_file_number(file_path: &PathBuf) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "9ad5d71cbf11e96ab3bfe983d157c705581ccc00ade632c26abbcaf6aea8bcc3"`
[INFO] running `"docker" "rm" "-f" "9ad5d71cbf11e96ab3bfe983d157c705581ccc00ade632c26abbcaf6aea8bcc3"`
[INFO] [stdout] 9ad5d71cbf11e96ab3bfe983d157c705581ccc00ade632c26abbcaf6aea8bcc3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/NotLeet/rust-file-manipulation:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 0c402eb55d369864a43029439be7e0ab4de33efa9332d19c30306437a8183a78
[INFO] running `"docker" "start" "-a" "0c402eb55d369864a43029439be7e0ab4de33efa9332d19c30306437a8183a78"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/read_file-a36bbd1e0d40d7cc
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "0c402eb55d369864a43029439be7e0ab4de33efa9332d19c30306437a8183a78"`
[INFO] running `"docker" "rm" "-f" "0c402eb55d369864a43029439be7e0ab4de33efa9332d19c30306437a8183a78"`
[INFO] [stdout] 0c402eb55d369864a43029439be7e0ab4de33efa9332d19c30306437a8183a78