[INFO] updating cached repository pietrocarbo/rust_first_steps
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pietrocarbo/rust_first_steps
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pietrocarbo/rust_first_steps" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/pietrocarbo/rust_first_steps"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/pietrocarbo/rust_first_steps'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pietrocarbo/rust_first_steps" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/pietrocarbo/rust_first_steps"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/pietrocarbo/rust_first_steps'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ab44a82cc79245986e93b857b57d532f63df8a11
[INFO] sha for GitHub repo pietrocarbo/rust_first_steps: ab44a82cc79245986e93b857b57d532f63df8a11
[INFO] validating manifest of pietrocarbo/rust_first_steps 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 pietrocarbo/rust_first_steps 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 pietrocarbo/rust_first_steps
[INFO] finished frobbing pietrocarbo/rust_first_steps
[INFO] frobbed toml for pietrocarbo/rust_first_steps written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/pietrocarbo/rust_first_steps/Cargo.toml
[INFO] started frobbing pietrocarbo/rust_first_steps
[INFO] finished frobbing pietrocarbo/rust_first_steps
[INFO] frobbed toml for pietrocarbo/rust_first_steps written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/pietrocarbo/rust_first_steps/Cargo.toml
[INFO] crate pietrocarbo/rust_first_steps 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 pietrocarbo/rust_first_steps against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/pietrocarbo/rust_first_steps:/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] 6b7dd2ccd78dd7d9b62f127b8302b2a743e269c6aa8d1528be94d66a33951a34
[INFO] running `"docker" "start" "-a" "6b7dd2ccd78dd7d9b62f127b8302b2a743e269c6aa8d1528be94d66a33951a34"`
[INFO] [stderr]    Compiling presentation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `file_parse_verbose`
[INFO] [stderr]   --> src/bin/3_error_IO.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn file_parse_verbose<P: AsRef<Path>>(file_path: P) -> Result<i32, CustomError> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `3_error_IO` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `3_error_io`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.27s
[INFO] running `"docker" "inspect" "6b7dd2ccd78dd7d9b62f127b8302b2a743e269c6aa8d1528be94d66a33951a34"`
[INFO] running `"docker" "rm" "-f" "6b7dd2ccd78dd7d9b62f127b8302b2a743e269c6aa8d1528be94d66a33951a34"`
[INFO] [stdout] 6b7dd2ccd78dd7d9b62f127b8302b2a743e269c6aa8d1528be94d66a33951a34
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/pietrocarbo/rust_first_steps:/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] c78c181ea10f9c0e39f0646dbe5814234ce8f52d0412a0fd9e18773b12b7e5cd
[INFO] running `"docker" "start" "-a" "c78c181ea10f9c0e39f0646dbe5814234ce8f52d0412a0fd9e18773b12b7e5cd"`
[INFO] [stderr]    Compiling presentation v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `file_parse_verbose`
[INFO] [stderr]   --> src/bin/3_error_IO.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn file_parse_verbose<P: AsRef<Path>>(file_path: P) -> Result<i32, CustomError> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `3_error_IO` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `3_error_io`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.82s
[INFO] running `"docker" "inspect" "c78c181ea10f9c0e39f0646dbe5814234ce8f52d0412a0fd9e18773b12b7e5cd"`
[INFO] running `"docker" "rm" "-f" "c78c181ea10f9c0e39f0646dbe5814234ce8f52d0412a0fd9e18773b12b7e5cd"`
[INFO] [stdout] c78c181ea10f9c0e39f0646dbe5814234ce8f52d0412a0fd9e18773b12b7e5cd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-6/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/pietrocarbo/rust_first_steps:/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] ae6b9be604fa07df2e3939d66374462f564e7b770b6215d5047788d38866d435
[INFO] running `"docker" "start" "-a" "ae6b9be604fa07df2e3939d66374462f564e7b770b6215d5047788d38866d435"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/1_linked_list-a5598a4320fd5e1f
[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] [stderr]      Running /opt/crater/target/debug/deps/2_generics-116898f42c9a2fa8
[INFO] [stderr]      Running /opt/crater/target/debug/deps/3_error_IO-e8eb90d8ac482ca2
[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] [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] [stderr]      Running /opt/crater/target/debug/deps/4_traits-197d3cb42e04356f
[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] [stderr]      Running /opt/crater/target/debug/deps/5_closures_cacher-90a60479bc34b971
[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" "ae6b9be604fa07df2e3939d66374462f564e7b770b6215d5047788d38866d435"`
[INFO] running `"docker" "rm" "-f" "ae6b9be604fa07df2e3939d66374462f564e7b770b6215d5047788d38866d435"`
[INFO] [stdout] ae6b9be604fa07df2e3939d66374462f564e7b770b6215d5047788d38866d435