[INFO] fetching crate rmesg 0.8.0...
[INFO] checking rmesg-0.8.0 against try#1c5262aa6c045a581fb974488793f09ed51fc498 for pr-78376
[INFO] extracting crate rmesg 0.8.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rmesg 0.8.0 on toolchain 1c5262aa6c045a581fb974488793f09ed51fc498
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rmesg 0.8.0
[INFO] finished tweaking crates.io crate rmesg 0.8.0
[INFO] tweaked toml for crates.io crate rmesg 0.8.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate rmesg 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-display-derive v0.1.0
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8328399494e2f77a264236c72e54667586b77af97cc60fd1bf93aaf0cf0fc0f
[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" "d8328399494e2f77a264236c72e54667586b77af97cc60fd1bf93aaf0cf0fc0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8328399494e2f77a264236c72e54667586b77af97cc60fd1bf93aaf0cf0fc0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8328399494e2f77a264236c72e54667586b77af97cc60fd1bf93aaf0cf0fc0f", kill_on_drop: false }`
[INFO] [stdout] d8328399494e2f77a264236c72e54667586b77af97cc60fd1bf93aaf0cf0fc0f
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1c5262aa6c045a581fb974488793f09ed51fc498" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47f7cf8150c2537188c6effb3d15ee7da6f79ebc5e2ccb8b7e3801a13c62f44d
[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" "47f7cf8150c2537188c6effb3d15ee7da6f79ebc5e2ccb8b7e3801a13c62f44d", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking errno v0.2.5
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling enum-display-derive v0.1.0
[INFO] [stderr]     Checking rmesg v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `kernel_log_timestamps_enable`
[INFO] [stdout]    --> src/lib.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |         kernel_log_timestamps_enable, rmesg, safely_wrapped_klogctl, KLogType, RMesgLinesIterator,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.48s
[INFO] running `Command { std: "docker" "inspect" "47f7cf8150c2537188c6effb3d15ee7da6f79ebc5e2ccb8b7e3801a13c62f44d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47f7cf8150c2537188c6effb3d15ee7da6f79ebc5e2ccb8b7e3801a13c62f44d", kill_on_drop: false }`
[INFO] [stdout] 47f7cf8150c2537188c6effb3d15ee7da6f79ebc5e2ccb8b7e3801a13c62f44d