[INFO] cloning repository https://github.com/ambiso/rayon_bug_mwe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ambiso/rayon_bug_mwe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fambiso%2Frayon_bug_mwe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fambiso%2Frayon_bug_mwe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 44c753ca9f4a9cc5b117a102773af17a9df78b5f
[INFO] checking ambiso/rayon_bug_mwe against master#9a42c6509d399fd205917ebce474b31315c5d3e9 for pr-97427
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fambiso%2Frayon_bug_mwe" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ambiso/rayon_bug_mwe on toolchain 9a42c6509d399fd205917ebce474b31315c5d3e9
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ambiso/rayon_bug_mwe
[INFO] finished tweaking git repo https://github.com/ambiso/rayon_bug_mwe
[INFO] tweaked toml for git repo https://github.com/ambiso/rayon_bug_mwe written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/ambiso/rayon_bug_mwe already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hermit-abi v0.1.18
[INFO] [stderr]   Downloaded cfg-if v1.0.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.3
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.0
[INFO] [stderr]   Downloaded libc v0.2.93
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.3
[INFO] [stderr]   Downloaded lazy_static v1.4.0
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.1
[INFO] [stderr]   Downloaded either v1.6.1
[INFO] [stderr]   Downloaded scopeguard v1.1.0
[INFO] [stderr]   Downloaded memoffset v0.6.3
[INFO] [stderr]   Downloaded autocfg v1.0.1
[INFO] [stderr]   Downloaded rayon-core v1.9.0
[INFO] [stderr]   Downloaded rayon v1.5.0
[INFO] [stderr]   Downloaded num_cpus v1.13.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e1e5c1fe04d00925993e1c4efde486353c43cda81f282a9a7dbe7d94bd76254
[INFO] running `Command { std: "docker" "start" "-a" "5e1e5c1fe04d00925993e1c4efde486353c43cda81f282a9a7dbe7d94bd76254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e1e5c1fe04d00925993e1c4efde486353c43cda81f282a9a7dbe7d94bd76254", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e1e5c1fe04d00925993e1c4efde486353c43cda81f282a9a7dbe7d94bd76254", kill_on_drop: false }`
[INFO] [stdout] 5e1e5c1fe04d00925993e1c4efde486353c43cda81f282a9a7dbe7d94bd76254
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+9a42c6509d399fd205917ebce474b31315c5d3e9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 250b397d82f22f9ed36fcc0d8b42027deb1908b80261e2ba5c29d648d582e58e
[INFO] running `Command { std: "docker" "start" "-a" "250b397d82f22f9ed36fcc0d8b42027deb1908b80261e2ba5c29d648d582e58e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rayon_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 34s
[INFO] running `Command { std: "docker" "inspect" "250b397d82f22f9ed36fcc0d8b42027deb1908b80261e2ba5c29d648d582e58e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "250b397d82f22f9ed36fcc0d8b42027deb1908b80261e2ba5c29d648d582e58e", kill_on_drop: false }`
[INFO] [stdout] 250b397d82f22f9ed36fcc0d8b42027deb1908b80261e2ba5c29d648d582e58e