[INFO] cloning repository https://github.com/blt/rwlock_vs_mutex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/blt/rwlock_vs_mutex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblt%2Frwlock_vs_mutex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblt%2Frwlock_vs_mutex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b00a87603670c0fa0c09fd0f2d036bc7ac4d1cc
[INFO] testing blt/rwlock_vs_mutex against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fblt%2Frwlock_vs_mutex" "/workspace/builds/worker-48/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-48/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/blt/rwlock_vs_mutex on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/blt/rwlock_vs_mutex
[INFO] finished tweaking git repo https://github.com/blt/rwlock_vs_mutex
[INFO] tweaked toml for git repo https://github.com/blt/rwlock_vs_mutex written to /workspace/builds/worker-48/source/Cargo.toml
[INFO] crate git repo https://github.com/blt/rwlock_vs_mutex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50e692e7f81c2a75220f6fde56789486a635451abd8e57ec4f532c96749a96d1
[INFO] running `Command { std: "docker" "start" "-a" "50e692e7f81c2a75220f6fde56789486a635451abd8e57ec4f532c96749a96d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50e692e7f81c2a75220f6fde56789486a635451abd8e57ec4f532c96749a96d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50e692e7f81c2a75220f6fde56789486a635451abd8e57ec4f532c96749a96d1", kill_on_drop: false }`
[INFO] [stdout] 50e692e7f81c2a75220f6fde56789486a635451abd8e57ec4f532c96749a96d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc9c52e44a1cbb7f7b3dbd84bd206b6d8b6ad20f4fbcba94c8b0428f6c2b6556
[INFO] running `Command { std: "docker" "start" "-a" "dc9c52e44a1cbb7f7b3dbd84bd206b6d8b6ad20f4fbcba94c8b0428f6c2b6556", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rwlock_vs_mutex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.75s
[INFO] running `Command { std: "docker" "inspect" "dc9c52e44a1cbb7f7b3dbd84bd206b6d8b6ad20f4fbcba94c8b0428f6c2b6556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc9c52e44a1cbb7f7b3dbd84bd206b6d8b6ad20f4fbcba94c8b0428f6c2b6556", kill_on_drop: false }`
[INFO] [stdout] dc9c52e44a1cbb7f7b3dbd84bd206b6d8b6ad20f4fbcba94c8b0428f6c2b6556
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb29e58bf25343c11c7faf324f06fe1d7bce88dbb36b5509ec8b8e6079bc0d28
[INFO] running `Command { std: "docker" "start" "-a" "cb29e58bf25343c11c7faf324f06fe1d7bce88dbb36b5509ec8b8e6079bc0d28", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rwlock_vs_mutex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "cb29e58bf25343c11c7faf324f06fe1d7bce88dbb36b5509ec8b8e6079bc0d28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb29e58bf25343c11c7faf324f06fe1d7bce88dbb36b5509ec8b8e6079bc0d28", kill_on_drop: false }`
[INFO] [stdout] cb29e58bf25343c11c7faf324f06fe1d7bce88dbb36b5509ec8b8e6079bc0d28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-48/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f01181bba9e4b3de9924b5fc971632281d61ca3a95b21a8914a8388fbce2fa93
[INFO] running `Command { std: "docker" "start" "-a" "f01181bba9e4b3de9924b5fc971632281d61ca3a95b21a8914a8388fbce2fa93", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rwlock_vs_mutex-961539410c85256a)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f01181bba9e4b3de9924b5fc971632281d61ca3a95b21a8914a8388fbce2fa93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f01181bba9e4b3de9924b5fc971632281d61ca3a95b21a8914a8388fbce2fa93", kill_on_drop: false }`
[INFO] [stdout] f01181bba9e4b3de9924b5fc971632281d61ca3a95b21a8914a8388fbce2fa93