[INFO] updating cached repository https://github.com/hinohi/rust-bfi
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 175b263486aee63733ca96d86e9a592b817cf979
[INFO] testing hinohi/rust-bfi against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhinohi%2Frust-bfi" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hinohi/rust-bfi on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/hinohi/rust-bfi
[INFO] finished tweaking git repo https://github.com/hinohi/rust-bfi
[INFO] tweaked toml for git repo https://github.com/hinohi/rust-bfi written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/hinohi/rust-bfi already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stdout] 04b469acbc3dee027ccb8351bbc827bd3c373baee8133b3c5ff6e0686cb49578
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "04b469acbc3dee027ccb8351bbc827bd3c373baee8133b3c5ff6e0686cb49578"`
[INFO] [stderr]    Compiling argparse v0.2.1
[INFO] [stderr]    Compiling rust-bfi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:131:25
[INFO] [stderr]     |
[INFO] [stderr] 131 |                     let mut loop_dst = AST::_optimize_merge(loop_src);
[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] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.10s
[INFO] running `"docker" "inspect" "04b469acbc3dee027ccb8351bbc827bd3c373baee8133b3c5ff6e0686cb49578"`
[INFO] running `"docker" "rm" "-f" "04b469acbc3dee027ccb8351bbc827bd3c373baee8133b3c5ff6e0686cb49578"`
[INFO] [stdout] 04b469acbc3dee027ccb8351bbc827bd3c373baee8133b3c5ff6e0686cb49578
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 11cbc4e48ba0ef0fd4b57f2d363feea13ec40047173db41ac7ee7164ee0d1492
[INFO] running `"docker" "start" "-a" "11cbc4e48ba0ef0fd4b57f2d363feea13ec40047173db41ac7ee7164ee0d1492"`
[INFO] [stderr]    Compiling rust-bfi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:131:25
[INFO] [stderr]     |
[INFO] [stderr] 131 |                     let mut loop_dst = AST::_optimize_merge(loop_src);
[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] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `"docker" "inspect" "11cbc4e48ba0ef0fd4b57f2d363feea13ec40047173db41ac7ee7164ee0d1492"`
[INFO] running `"docker" "rm" "-f" "11cbc4e48ba0ef0fd4b57f2d363feea13ec40047173db41ac7ee7164ee0d1492"`
[INFO] [stdout] 11cbc4e48ba0ef0fd4b57f2d363feea13ec40047173db41ac7ee7164ee0d1492
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4b837e35e247b364ccd8da0f4c5219a2566128f757e4024a7ab0d6dcfb463b40
[INFO] running `"docker" "start" "-a" "4b837e35e247b364ccd8da0f4c5219a2566128f757e4024a7ab0d6dcfb463b40"`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:131:25
[INFO] [stderr]     |
[INFO] [stderr] 131 |                     let mut loop_dst = AST::_optimize_merge(loop_src);
[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] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rust_bfi-8e9db7148c81555f
[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" "4b837e35e247b364ccd8da0f4c5219a2566128f757e4024a7ab0d6dcfb463b40"`
[INFO] running `"docker" "rm" "-f" "4b837e35e247b364ccd8da0f4c5219a2566128f757e4024a7ab0d6dcfb463b40"`
[INFO] [stdout] 4b837e35e247b364ccd8da0f4c5219a2566128f757e4024a7ab0d6dcfb463b40