[INFO] fetching crate rustfix 0.5.1...
[INFO] checking rustfix-0.5.1 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate rustfix 0.5.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rustfix 0.5.1 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustfix 0.5.1
[INFO] finished tweaking crates.io crate rustfix 0.5.1
[INFO] tweaked toml for crates.io crate rustfix 0.5.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate rustfix 0.5.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded shared_child v0.3.4
[INFO] [stderr]   Downloaded lazycell v0.5.1
[INFO] [stderr]   Downloaded serde_json v1.0.50
[INFO] [stderr]   Downloaded os_pipe v0.6.2
[INFO] [stderr]   Downloaded nix v0.11.1
[INFO] [stderr]   Downloaded proptest v0.7.2
[INFO] [stderr]   Downloaded duct v0.9.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f2542acc896bf2fb3255e9ff06643cc13606c725aa1c8b513d8a6c1e67b4f51d
[INFO] running `Command { std: "docker" "start" "-a" "f2542acc896bf2fb3255e9ff06643cc13606c725aa1c8b513d8a6c1e67b4f51d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2542acc896bf2fb3255e9ff06643cc13606c725aa1c8b513d8a6c1e67b4f51d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2542acc896bf2fb3255e9ff06643cc13606c725aa1c8b513d8a6c1e67b4f51d", kill_on_drop: false }`
[INFO] [stdout] f2542acc896bf2fb3255e9ff06643cc13606c725aa1c8b513d8a6c1e67b4f51d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a4ccc37453dd0b853c9a78d9b985b272f6a433f98b382bb369106b1419027244
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a4ccc37453dd0b853c9a78d9b985b272f6a433f98b382bb369106b1419027244", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling nix v0.11.1
[INFO] [stderr]    Compiling serde v1.0.105
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]     Checking lazycell v0.5.1
[INFO] [stderr]     Checking regex-syntax v0.4.2
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking bit-set v0.5.1
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking shared_child v0.3.4
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking proptest v0.7.2
[INFO] [stderr]     Checking os_pipe v0.6.2
[INFO] [stderr]     Checking duct v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.105
[INFO] [stderr]     Checking serde_json v1.0.50
[INFO] [stderr]     Checking rustfix v0.5.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.58s
[INFO] running `Command { std: "docker" "inspect" "a4ccc37453dd0b853c9a78d9b985b272f6a433f98b382bb369106b1419027244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4ccc37453dd0b853c9a78d9b985b272f6a433f98b382bb369106b1419027244", kill_on_drop: false }`
[INFO] [stdout] a4ccc37453dd0b853c9a78d9b985b272f6a433f98b382bb369106b1419027244