[INFO] cloning repository https://github.com/brkydnc/concurrency
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brkydnc/concurrency" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrkydnc%2Fconcurrency", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrkydnc%2Fconcurrency'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d61570eaa04735a2a9e5d85c7101c6f45f3442a
[INFO] testing brkydnc/concurrency against try#7af779037716ae4125ceabb429791b4cf5dd0a43 for pr-136932
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrkydnc%2Fconcurrency" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brkydnc/concurrency on toolchain 7af779037716ae4125ceabb429791b4cf5dd0a43
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brkydnc/concurrency
[INFO] finished tweaking git repo https://github.com/brkydnc/concurrency
[INFO] tweaked toml for git repo https://github.com/brkydnc/concurrency written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/brkydnc/concurrency already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aeb6376506a0592338dbc4e697ff079ad884437f1e8169c0b92b09c66b4d5fc8
[INFO] running `Command { std: "docker" "start" "-a" "aeb6376506a0592338dbc4e697ff079ad884437f1e8169c0b92b09c66b4d5fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aeb6376506a0592338dbc4e697ff079ad884437f1e8169c0b92b09c66b4d5fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aeb6376506a0592338dbc4e697ff079ad884437f1e8169c0b92b09c66b4d5fc8", kill_on_drop: false }`
[INFO] [stdout] aeb6376506a0592338dbc4e697ff079ad884437f1e8169c0b92b09c66b4d5fc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65a19be6225132b4f2614fe997bf4a182d07e1f6e09217d45eb0a9415c25bf56
[INFO] running `Command { std: "docker" "start" "-a" "65a19be6225132b4f2614fe997bf4a182d07e1f6e09217d45eb0a9415c25bf56", kill_on_drop: false }`
[INFO] [stderr]    Compiling concurrency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `Command { std: "docker" "inspect" "65a19be6225132b4f2614fe997bf4a182d07e1f6e09217d45eb0a9415c25bf56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65a19be6225132b4f2614fe997bf4a182d07e1f6e09217d45eb0a9415c25bf56", kill_on_drop: false }`
[INFO] [stdout] 65a19be6225132b4f2614fe997bf4a182d07e1f6e09217d45eb0a9415c25bf56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0a575c994d9b610ee023ce3cff0f9379bf40a6b9103e95393dd4ab0a7105dd0
[INFO] running `Command { std: "docker" "start" "-a" "b0a575c994d9b610ee023ce3cff0f9379bf40a6b9103e95393dd4ab0a7105dd0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling concurrency v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.37s
[INFO] running `Command { std: "docker" "inspect" "b0a575c994d9b610ee023ce3cff0f9379bf40a6b9103e95393dd4ab0a7105dd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0a575c994d9b610ee023ce3cff0f9379bf40a6b9103e95393dd4ab0a7105dd0", kill_on_drop: false }`
[INFO] [stdout] b0a575c994d9b610ee023ce3cff0f9379bf40a6b9103e95393dd4ab0a7105dd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+7af779037716ae4125ceabb429791b4cf5dd0a43" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 120fa0e7fd23ca2e9da2b97a2d738ea79aa13f6efce5eb8398caceb4ef72b6bd
[INFO] running `Command { std: "docker" "start" "-a" "120fa0e7fd23ca2e9da2b97a2d738ea79aa13f6efce5eb8398caceb4ef72b6bd", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/concurrency-1bd620478b3194e6)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test stack::test::push_then_pop ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests concurrency
[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" "120fa0e7fd23ca2e9da2b97a2d738ea79aa13f6efce5eb8398caceb4ef72b6bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "120fa0e7fd23ca2e9da2b97a2d738ea79aa13f6efce5eb8398caceb4ef72b6bd", kill_on_drop: false }`
[INFO] [stdout] 120fa0e7fd23ca2e9da2b97a2d738ea79aa13f6efce5eb8398caceb4ef72b6bd