[INFO] cloning repository lauzi/rustree
[INFO] running `"git" "clone" "--bare" "git://github.com/lauzi/rustree.git" "work/cache/sources/gh/lauzi/rustree"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/lauzi/rustree'...
[INFO] running `"git" "clone" "work/cache/sources/gh/lauzi/rustree" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/lauzi/rustree"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/lauzi/rustree'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/lauzi/rustree" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/lauzi/rustree"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/lauzi/rustree'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d6ff2f9e381164ebcd45075fbce8ea3d5a5b51fa
[INFO] sha for GitHub repo lauzi/rustree: d6ff2f9e381164ebcd45075fbce8ea3d5a5b51fa
[INFO] validating manifest of lauzi/rustree on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of lauzi/rustree on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing lauzi/rustree
[INFO] finished frobbing lauzi/rustree
[INFO] frobbed toml for lauzi/rustree written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/lauzi/rustree/Cargo.toml
[INFO] started frobbing lauzi/rustree
[INFO] finished frobbing lauzi/rustree
[INFO] frobbed toml for lauzi/rustree written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/lauzi/rustree/Cargo.toml
[INFO] crate lauzi/rustree already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing lauzi/rustree against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/lauzi/rustree:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] bd45376cb6ae14adcc3988a673eac3d16af708b139523cb51a45b3a4cab8d05c
[INFO] running `"docker" "start" "-a" "bd45376cb6ae14adcc3988a673eac3d16af708b139523cb51a45b3a4cab8d05c"`
[INFO] [stderr]    Compiling colored v1.6.1
[INFO] [stderr]    Compiling rustree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:185:17
[INFO] [stderr]     |
[INFO] [stderr] 185 |             let mut is_last_iter: IsLastIterator<_> = children.drain(..).into();
[INFO] [stderr]     |                 ----^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.06s
[INFO] running `"docker" "inspect" "bd45376cb6ae14adcc3988a673eac3d16af708b139523cb51a45b3a4cab8d05c"`
[INFO] running `"docker" "rm" "-f" "bd45376cb6ae14adcc3988a673eac3d16af708b139523cb51a45b3a4cab8d05c"`
[INFO] [stdout] bd45376cb6ae14adcc3988a673eac3d16af708b139523cb51a45b3a4cab8d05c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/lauzi/rustree:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 7cbd40eae9ff013fa7eaeb3e0deb1edb8af0ec4b49f8a7628c120b32b93f1649
[INFO] running `"docker" "start" "-a" "7cbd40eae9ff013fa7eaeb3e0deb1edb8af0ec4b49f8a7628c120b32b93f1649"`
[INFO] [stderr]    Compiling rustree v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:185:17
[INFO] [stderr]     |
[INFO] [stderr] 185 |             let mut is_last_iter: IsLastIterator<_> = children.drain(..).into();
[INFO] [stderr]     |                 ----^^^^^^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `"docker" "inspect" "7cbd40eae9ff013fa7eaeb3e0deb1edb8af0ec4b49f8a7628c120b32b93f1649"`
[INFO] running `"docker" "rm" "-f" "7cbd40eae9ff013fa7eaeb3e0deb1edb8af0ec4b49f8a7628c120b32b93f1649"`
[INFO] [stdout] 7cbd40eae9ff013fa7eaeb3e0deb1edb8af0ec4b49f8a7628c120b32b93f1649
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-5/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/lauzi/rustree:/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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] a8151cc4e7df7c86b5151e70e5cd9685006721c1eb11af43df2e9779f4e8f33d
[INFO] running `"docker" "start" "-a" "a8151cc4e7df7c86b5151e70e5cd9685006721c1eb11af43df2e9779f4e8f33d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rustree-2618628186651feb
[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" "a8151cc4e7df7c86b5151e70e5cd9685006721c1eb11af43df2e9779f4e8f33d"`
[INFO] running `"docker" "rm" "-f" "a8151cc4e7df7c86b5151e70e5cd9685006721c1eb11af43df2e9779f4e8f33d"`
[INFO] [stdout] a8151cc4e7df7c86b5151e70e5cd9685006721c1eb11af43df2e9779f4e8f33d