[INFO] cloning repository https://github.com/akxcv/b
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/akxcv/b" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakxcv%2Fb", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakxcv%2Fb'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2366ea43f953dd2bf094fb412e58a040a6a04a67
[INFO] checking akxcv/b against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fakxcv%2Fb" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/akxcv/b on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/akxcv/b
[INFO] finished tweaking git repo https://github.com/akxcv/b
[INFO] tweaked toml for git repo https://github.com/akxcv/b written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/akxcv/b already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 799ea811a7b16cdc95cda649379cc63578ba14b70a2bce87094b37429375e4cf
[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" "799ea811a7b16cdc95cda649379cc63578ba14b70a2bce87094b37429375e4cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "799ea811a7b16cdc95cda649379cc63578ba14b70a2bce87094b37429375e4cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "799ea811a7b16cdc95cda649379cc63578ba14b70a2bce87094b37429375e4cf", kill_on_drop: false }`
[INFO] [stdout] 799ea811a7b16cdc95cda649379cc63578ba14b70a2bce87094b37429375e4cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 1da79a0b893b1c59f96f50fb1c03469cd6f521d24f2c94c5bf5e1e98dc64e7c1
[INFO] running `Command { std: "docker" "start" "-a" "1da79a0b893b1c59f96f50fb1c03469cd6f521d24f2c94c5bf5e1e98dc64e7c1", 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]    Compiling libc v0.2.44
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]    Compiling nix v0.11.0
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking shlex v0.1.1
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking yaml-rust v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking dirs v1.0.4
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking serde_yaml v0.8.8
[INFO] [stderr]     Checking skim v0.5.2
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking b v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.96s
[INFO] running `Command { std: "docker" "inspect" "1da79a0b893b1c59f96f50fb1c03469cd6f521d24f2c94c5bf5e1e98dc64e7c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1da79a0b893b1c59f96f50fb1c03469cd6f521d24f2c94c5bf5e1e98dc64e7c1", kill_on_drop: false }`
[INFO] [stdout] 1da79a0b893b1c59f96f50fb1c03469cd6f521d24f2c94c5bf5e1e98dc64e7c1