[INFO] fetching crate nbd 0.2.3...
[INFO] checking nbd-0.2.3 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate nbd 0.2.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate nbd 0.2.3 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 nbd 0.2.3
[INFO] finished tweaking crates.io crate nbd 0.2.3
[INFO] tweaked toml for crates.io crate nbd 0.2.3 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate nbd 0.2.3 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 wait-timeout v0.1.5
[INFO] [stderr]   Downloaded bit-vec v0.5.0
[INFO] [stderr]   Downloaded bit-set v0.5.0
[INFO] [stderr]   Downloaded version_check v0.1.4
[INFO] [stderr]   Downloaded proptest v0.8.4
[INFO] [stderr]   Downloaded rusty-fork v0.2.0
[INFO] [stderr]   Downloaded pipe v0.0.3
[INFO] [stderr]   Downloaded tempfile v3.0.3
[INFO] [stderr]   Downloaded readwrite v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stdout] 3719faa8db3eb4301aec4a0e76e4d34c2abe6972885b62242e3f7a0a50aa50e5
[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" "3719faa8db3eb4301aec4a0e76e4d34c2abe6972885b62242e3f7a0a50aa50e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3719faa8db3eb4301aec4a0e76e4d34c2abe6972885b62242e3f7a0a50aa50e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3719faa8db3eb4301aec4a0e76e4d34c2abe6972885b62242e3f7a0a50aa50e5", kill_on_drop: false }`
[INFO] [stdout] 3719faa8db3eb4301aec4a0e76e4d34c2abe6972885b62242e3f7a0a50aa50e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 10ee6710258cc0552c71006bd601e61527473d1b78b47d9150c9197c00e9f383
[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" "10ee6710258cc0552c71006bd601e61527473d1b78b47d9150c9197c00e9f383", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling version_check v0.1.4
[INFO] [stderr]     Checking rand_core v0.2.1
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]     Checking quick-error v1.2.2
[INFO] [stderr]     Checking bit-vec v0.5.0
[INFO] [stderr]     Checking readwrite v0.1.0
[INFO] [stderr]     Checking pipe v0.0.3
[INFO] [stderr]     Checking nbd v0.2.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bit-set v0.5.0
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking wait-timeout v0.1.5
[INFO] [stderr]     Checking tempfile v3.0.3
[INFO] [stderr]     Checking rusty-fork v0.2.0
[INFO] [stderr]     Checking proptest v0.8.4
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.00s
[INFO] running `Command { std: "docker" "inspect" "10ee6710258cc0552c71006bd601e61527473d1b78b47d9150c9197c00e9f383", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10ee6710258cc0552c71006bd601e61527473d1b78b47d9150c9197c00e9f383", kill_on_drop: false }`
[INFO] [stdout] 10ee6710258cc0552c71006bd601e61527473d1b78b47d9150c9197c00e9f383