[INFO] updating cached repository Mcat12/backtrack
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Mcat12/backtrack
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Mcat12/backtrack" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Mcat12/backtrack"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Mcat12/backtrack'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Mcat12/backtrack" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Mcat12/backtrack"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Mcat12/backtrack'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9a37c73ecf8ae1343a37bfea66982263d88bb0e4
[INFO] sha for GitHub repo Mcat12/backtrack: 9a37c73ecf8ae1343a37bfea66982263d88bb0e4
[INFO] validating manifest of Mcat12/backtrack 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 Mcat12/backtrack 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 Mcat12/backtrack
[INFO] finished frobbing Mcat12/backtrack
[INFO] frobbed toml for Mcat12/backtrack written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Mcat12/backtrack/Cargo.toml
[INFO] started frobbing Mcat12/backtrack
[INFO] finished frobbing Mcat12/backtrack
[INFO] frobbed toml for Mcat12/backtrack written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/Mcat12/backtrack/Cargo.toml
[INFO] crate Mcat12/backtrack 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 Mcat12/backtrack against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Mcat12/backtrack:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 3bfc266d42a3a1c44e1eaec2da5b8ccffa75fd627737bc66590491f3cbab24c5
[INFO] running `"docker" "start" "-a" "3bfc266d42a3a1c44e1eaec2da5b8ccffa75fd627737bc66590491f3cbab24c5"`
[INFO] [stderr]    Compiling backtrack v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.57s
[INFO] running `"docker" "inspect" "3bfc266d42a3a1c44e1eaec2da5b8ccffa75fd627737bc66590491f3cbab24c5"`
[INFO] running `"docker" "rm" "-f" "3bfc266d42a3a1c44e1eaec2da5b8ccffa75fd627737bc66590491f3cbab24c5"`
[INFO] [stdout] 3bfc266d42a3a1c44e1eaec2da5b8ccffa75fd627737bc66590491f3cbab24c5
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Mcat12/backtrack:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] e917bde78af56a1ebe9794a823b2b50f237dc5aa92e8c59bcf6b5a556f5a412b
[INFO] running `"docker" "start" "-a" "e917bde78af56a1ebe9794a823b2b50f237dc5aa92e8c59bcf6b5a556f5a412b"`
[INFO] [stderr]    Compiling criterion-plot v0.2.5
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling itertools-num v0.1.3
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling handlebars v0.32.4
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling csv v1.0.2
[INFO] [stderr]    Compiling criterion-stats v0.2.5
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling simplelog v0.5.3
[INFO] [stderr]    Compiling criterion v0.2.5
[INFO] [stderr]    Compiling backtrack v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.60s
[INFO] running `"docker" "inspect" "e917bde78af56a1ebe9794a823b2b50f237dc5aa92e8c59bcf6b5a556f5a412b"`
[INFO] running `"docker" "rm" "-f" "e917bde78af56a1ebe9794a823b2b50f237dc5aa92e8c59bcf6b5a556f5a412b"`
[INFO] [stdout] e917bde78af56a1ebe9794a823b2b50f237dc5aa92e8c59bcf6b5a556f5a412b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/Mcat12/backtrack:/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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 97a3a9495c84a336551a80e71e0d1dda81a22cecdee6fa3b83f390cdb282a9fb
[INFO] running `"docker" "start" "-a" "97a3a9495c84a336551a80e71e0d1dda81a22cecdee6fa3b83f390cdb282a9fb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/backtrack-c3271ff768cb7232
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test queen::tests::is_valid ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/8queens-5d94515f970383f4
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 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] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/trunk_pack-c930b2fb55a13637
[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]    Doc-tests backtrack
[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" "97a3a9495c84a336551a80e71e0d1dda81a22cecdee6fa3b83f390cdb282a9fb"`
[INFO] running `"docker" "rm" "-f" "97a3a9495c84a336551a80e71e0d1dda81a22cecdee6fa3b83f390cdb282a9fb"`
[INFO] [stdout] 97a3a9495c84a336551a80e71e0d1dda81a22cecdee6fa3b83f390cdb282a9fb