[INFO] fetching crate preexplorer 0.3.4...
[INFO] checking preexplorer-0.3.4 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate preexplorer 0.3.4 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate preexplorer 0.3.4 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 preexplorer 0.3.4
[INFO] finished tweaking crates.io crate preexplorer 0.3.4
[INFO] tweaked toml for crates.io crate preexplorer 0.3.4 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate preexplorer 0.3.4 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] 5b767326426a13cd5b390b4daaa0db11a468d02d4b04821d1397d1a2bb4cb6e7
[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" "5b767326426a13cd5b390b4daaa0db11a468d02d4b04821d1397d1a2bb4cb6e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b767326426a13cd5b390b4daaa0db11a468d02d4b04821d1397d1a2bb4cb6e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b767326426a13cd5b390b4daaa0db11a468d02d4b04821d1397d1a2bb4cb6e7", kill_on_drop: false }`
[INFO] [stdout] 5b767326426a13cd5b390b4daaa0db11a468d02d4b04821d1397d1a2bb4cb6e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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] [stdout] a89bc947d29fb4fb0e93de7c2d4d21fe28f2bc114b280ffb155f29eddb5a98eb
[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" "a89bc947d29fb4fb0e93de7c2d4d21fe28f2bc114b280ffb155f29eddb5a98eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]    Compiling anyhow v1.0.32
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking average v0.10.4
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]    Compiling getset v0.1.1
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking preexplorer v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.66s
[INFO] running `Command { std: "docker" "inspect" "a89bc947d29fb4fb0e93de7c2d4d21fe28f2bc114b280ffb155f29eddb5a98eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a89bc947d29fb4fb0e93de7c2d4d21fe28f2bc114b280ffb155f29eddb5a98eb", kill_on_drop: false }`
[INFO] [stdout] a89bc947d29fb4fb0e93de7c2d4d21fe28f2bc114b280ffb155f29eddb5a98eb