[INFO] cloning repository https://github.com/gnieto/skeleton-cli-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gnieto/skeleton-cli-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgnieto%2Fskeleton-cli-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgnieto%2Fskeleton-cli-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d65b3efc356dadc8537a2074cf37349e8f8bea6
[INFO] checking gnieto/skeleton-cli-rs against master#6526e5c772f2da07db745c94ca6bb0a591a39ba4 for pr-80920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgnieto%2Fskeleton-cli-rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gnieto/skeleton-cli-rs on toolchain 6526e5c772f2da07db745c94ca6bb0a591a39ba4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gnieto/skeleton-cli-rs
[INFO] finished tweaking git repo https://github.com/gnieto/skeleton-cli-rs
[INFO] tweaked toml for git repo https://github.com/gnieto/skeleton-cli-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/gnieto/skeleton-cli-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dbf1df4e94033d0942b4c00ef9618d9ae8f9e1ed9e4c2a9b617ed45a3e9dc58a
[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" "dbf1df4e94033d0942b4c00ef9618d9ae8f9e1ed9e4c2a9b617ed45a3e9dc58a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbf1df4e94033d0942b4c00ef9618d9ae8f9e1ed9e4c2a9b617ed45a3e9dc58a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbf1df4e94033d0942b4c00ef9618d9ae8f9e1ed9e4c2a9b617ed45a3e9dc58a", kill_on_drop: false }`
[INFO] [stdout] dbf1df4e94033d0942b4c00ef9618d9ae8f9e1ed9e4c2a9b617ed45a3e9dc58a
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "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] 6db00f57c0dd0fb3ad3929ec41755aded1068d2d269caaf70c90971939b27e64
[INFO] running `Command { std: "docker" "start" "-a" "6db00f57c0dd0fb3ad3929ec41755aded1068d2d269caaf70c90971939b27e64", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.23
[INFO] [stderr]    Compiling gcc v0.3.50
[INFO] [stderr]     Checking cfg-if v0.1.1
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking rustc-demangle v0.1.4
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking unicode-segmentation v1.2.0
[INFO] [stderr]     Checking bitflags v0.8.2
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking colored v1.5.1
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking thread-id v3.1.0
[INFO] [stderr]     Checking term_size v0.3.0
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking aho-corasick v0.6.3
[INFO] [stderr]     Checking clap v2.24.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.11
[INFO] [stderr]     Checking regex v0.2.2
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking backtrace v0.3.2
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking app_name v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.80s
[INFO] running `Command { std: "docker" "inspect" "6db00f57c0dd0fb3ad3929ec41755aded1068d2d269caaf70c90971939b27e64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6db00f57c0dd0fb3ad3929ec41755aded1068d2d269caaf70c90971939b27e64", kill_on_drop: false }`
[INFO] [stdout] 6db00f57c0dd0fb3ad3929ec41755aded1068d2d269caaf70c90971939b27e64