[INFO] crate tylift 0.3.2 is already in cache
[INFO] checking tylift-0.3.2 against master#209b2be09fcaff937480d1fbbe8b31646e361c7a for pr-70917
[INFO] extracting crate tylift 0.3.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tylift 0.3.2 on toolchain 209b2be09fcaff937480d1fbbe8b31646e361c7a
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate tylift 0.3.2
[INFO] finished tweaking crates.io crate tylift 0.3.2
[INFO] tweaked toml for crates.io crate tylift 0.3.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+209b2be09fcaff937480d1fbbe8b31646e361c7a" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f694f64b606984703b04d3d96f1322700f65da5a44c29a063026ac72a4e8e2a2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "f694f64b606984703b04d3d96f1322700f65da5a44c29a063026ac72a4e8e2a2"`
[INFO] [stderr]     Checking tylift v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: unused extern crate
[INFO] [stderr]   --> src/lib.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | extern crate proc_macro;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/lib.rs:1:11
[INFO] [stderr]    |
[INFO] [stderr] 1  | #![forbid(rust_2018_idioms, unused_must_use)]
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[forbid(unused_extern_crates)]` implied by `#[forbid(rust_2018_idioms)]`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `tylift`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: unused extern crate
[INFO] [stderr]   --> src/lib.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | extern crate proc_macro;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove it
[INFO] [stderr]    |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]   --> src/lib.rs:1:11
[INFO] [stderr]    |
[INFO] [stderr] 1  | #![forbid(rust_2018_idioms, unused_must_use)]
[INFO] [stderr]    |           ^^^^^^^^^^^^^^^^
[INFO] [stderr]    = note: `#[forbid(unused_extern_crates)]` implied by `#[forbid(rust_2018_idioms)]`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `tylift`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f694f64b606984703b04d3d96f1322700f65da5a44c29a063026ac72a4e8e2a2"`
[INFO] running `"docker" "rm" "-f" "f694f64b606984703b04d3d96f1322700f65da5a44c29a063026ac72a4e8e2a2"`
[INFO] [stdout] f694f64b606984703b04d3d96f1322700f65da5a44c29a063026ac72a4e8e2a2
