[INFO] fetching crate ergo 0.0.5...
[INFO] checking ergo-0.0.5 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate ergo 0.0.5 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate ergo 0.0.5 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 crates.io crate ergo 0.0.5
[INFO] finished tweaking crates.io crate ergo 0.0.5
[INFO] tweaked toml for crates.io crate ergo 0.0.5 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] 883c3fe8ce58980b30f66cb35ca62ba7dbd7b7ec29ba8a31693ccf8cee4fc051
[INFO] running `Command { std: "docker" "start" "-a" "883c3fe8ce58980b30f66cb35ca62ba7dbd7b7ec29ba8a31693ccf8cee4fc051", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "883c3fe8ce58980b30f66cb35ca62ba7dbd7b7ec29ba8a31693ccf8cee4fc051", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "883c3fe8ce58980b30f66cb35ca62ba7dbd7b7ec29ba8a31693ccf8cee4fc051", kill_on_drop: false }`
[INFO] [stdout] 883c3fe8ce58980b30f66cb35ca62ba7dbd7b7ec29ba8a31693ccf8cee4fc051
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/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] 260fd712b95d108c76b7c803a4a625ac91156eb650ad18c17d3d2a5d446cc489
[INFO] running `Command { std: "docker" "start" "-a" "260fd712b95d108c76b7c803a4a625ac91156eb650ad18c17d3d2a5d446cc489", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking std_prelude v0.2.12
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking taken v0.1.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking crossbeam-utils v0.3.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking filetime v0.2.13
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking ergo_config v0.0.1
[INFO] [stderr]     Checking shellexpand v1.1.1
[INFO] [stderr]     Checking tar v0.4.30
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking crossbeam-epoch v0.4.3
[INFO] [stderr]     Checking parking_lot v0.5.5
[INFO] [stderr]     Checking crossbeam-channel v0.1.3
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking ergo_sync v0.1.0
[INFO] [stderr]     Checking stfu8 v0.2.4
[INFO] [stderr]     Checking path_abs v0.4.1
[INFO] [stderr]     Checking ergo_std v0.0.3
[INFO] [stderr]     Checking ergo_fs v0.2.0
[INFO] [stderr]     Checking ctrlc v3.1.7
[INFO] [stderr]     Checking ergo_sys v0.0.1
[INFO] [stderr]     Checking ergo v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.48s
[INFO] running `Command { std: "docker" "inspect" "260fd712b95d108c76b7c803a4a625ac91156eb650ad18c17d3d2a5d446cc489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "260fd712b95d108c76b7c803a4a625ac91156eb650ad18c17d3d2a5d446cc489", kill_on_drop: false }`
[INFO] [stdout] 260fd712b95d108c76b7c803a4a625ac91156eb650ad18c17d3d2a5d446cc489