[INFO] crate magic-ring-buffer 0.1.0 is already in cache
[INFO] checking magic-ring-buffer-0.1.0 against master#ba72b15666b2491415aec703a02c2364fe5e2790 for pr-71140
[INFO] extracting crate magic-ring-buffer 0.1.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate magic-ring-buffer 0.1.0 on toolchain ba72b15666b2491415aec703a02c2364fe5e2790
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate magic-ring-buffer 0.1.0
[INFO] finished tweaking crates.io crate magic-ring-buffer 0.1.0
[INFO] tweaked toml for crates.io crate magic-ring-buffer 0.1.0 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ba72b15666b2491415aec703a02c2364fe5e2790" "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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+ba72b15666b2491415aec703a02c2364fe5e2790" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 51fdfba5eebc5ab9acbe1bb626063641256a932ec3fd04fe54076b2a7ab3a811
[INFO] running `"docker" "start" "-a" "51fdfba5eebc5ab9acbe1bb626063641256a932ec3fd04fe54076b2a7ab3a811"`
[INFO] [stderr]     Checking strum v0.13.0
[INFO] [stderr]     Checking errno v0.2.5
[INFO] [stderr]    Compiling strum_macros v0.13.0
[INFO] [stderr]     Checking file-descriptors v0.8.7
[INFO] [stderr]     Checking magic-ring-buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/MirroredMemoryMapCreationError.rs:37:32
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn source(&self) ->  Option<&(error::Error + 'static)>
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/MirroredMemoryMapCreationError.rs:37:32
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn source(&self) ->  Option<&(error::Error + 'static)>
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.92s
[INFO] running `"docker" "inspect" "51fdfba5eebc5ab9acbe1bb626063641256a932ec3fd04fe54076b2a7ab3a811"`
[INFO] running `"docker" "rm" "-f" "51fdfba5eebc5ab9acbe1bb626063641256a932ec3fd04fe54076b2a7ab3a811"`
[INFO] [stdout] 51fdfba5eebc5ab9acbe1bb626063641256a932ec3fd04fe54076b2a7ab3a811