[INFO] updating cached repository https://github.com/Shados/harmonise
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7d7c495bfe40b84dfad6277e2900fedfda0f805e
[INFO] checking Shados/harmonise against master#3dbade652ed8ebac70f903e01f51cd92c4e4302c for pr-69880
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FShados%2Fharmonise" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Shados/harmonise on toolchain 3dbade652ed8ebac70f903e01f51cd92c4e4302c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Shados/harmonise
[INFO] finished tweaking git repo https://github.com/Shados/harmonise
[INFO] tweaked toml for git repo https://github.com/Shados/harmonise written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/Shados/harmonise already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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" "+3dbade652ed8ebac70f903e01f51cd92c4e4302c" "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] 656bf8507624b1719d12fd07a46e8e83a3a5b07521a01507feef803fd6205921
[INFO] running `"docker" "start" "-a" "656bf8507624b1719d12fd07a46e8e83a3a5b07521a01507feef803fd6205921"`
[INFO] [stderr]     Checking exit-code v1.0.0
[INFO] [stderr]     Checking exit v0.2.0
[INFO] [stderr]     Checking if_chain v1.0.0
[INFO] [stderr]     Checking sc v0.2.2
[INFO] [stderr]     Checking slog-scope-futures v0.1.1
[INFO] [stderr]    Compiling syn-mid v0.4.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling tokio-macros v0.2.4
[INFO] [stderr]    Compiling snafu-derive v0.6.2
[INFO] [stderr]    Compiling async-trait v0.1.24
[INFO] [stderr]    Compiling proc-macro-error v0.4.5
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking slog-term v2.5.0
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking slog-stdlog v4.0.0
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.5
[INFO] [stderr]     Checking tokio v0.2.11
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]    Compiling structopt-derive v0.4.1
[INFO] [stderr]     Checking snafu v0.6.2
[INFO] [stderr]     Checking futures-util v0.3.1
[INFO] [stderr]     Checking structopt v0.3.8
[INFO] [stderr]     Checking toml v0.5.6
[INFO] [stderr]     Checking serde_regex v0.4.0
[INFO] [stderr]     Checking futures-executor v0.3.1
[INFO] [stderr]     Checking futures v0.3.1
[INFO] [stderr]     Checking harmonise v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/main.rs:487:13
[INFO] [stderr]     |
[INFO] [stderr] 487 | /             (metadata.is_dir()
[INFO] [stderr] 488 | |                 || match extension {
[INFO] [stderr] 489 | |                     None => false,
[INFO] [stderr] 490 | |                     Some(extension) => config.music_filetypes.contains(extension.as_os_str()),
[INFO] [stderr] 491 | |                 })
[INFO] [stderr]     | |__________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 487 |             metadata.is_dir()
[INFO] [stderr] 488 |                 || match extension {
[INFO] [stderr] 489 |                     None => false,
[INFO] [stderr] 490 |                     Some(extension) => config.music_filetypes.contains(extension.as_os_str()),
[INFO] [stderr] 491 |                 }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/main.rs:487:13
[INFO] [stderr]     |
[INFO] [stderr] 487 | /             (metadata.is_dir()
[INFO] [stderr] 488 | |                 || match extension {
[INFO] [stderr] 489 | |                     None => false,
[INFO] [stderr] 490 | |                     Some(extension) => config.music_filetypes.contains(extension.as_os_str()),
[INFO] [stderr] 491 | |                 })
[INFO] [stderr]     | |__________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 487 |             metadata.is_dir()
[INFO] [stderr] 488 |                 || match extension {
[INFO] [stderr] 489 |                     None => false,
[INFO] [stderr] 490 |                     Some(extension) => config.music_filetypes.contains(extension.as_os_str()),
[INFO] [stderr] 491 |                 }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `result_map_or_else` has been stable since 1.41.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(result_map_or_else)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `result_map_or_else` has been stable since 1.41.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(result_map_or_else)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 05s
[INFO] running `"docker" "inspect" "656bf8507624b1719d12fd07a46e8e83a3a5b07521a01507feef803fd6205921"`
[INFO] running `"docker" "rm" "-f" "656bf8507624b1719d12fd07a46e8e83a3a5b07521a01507feef803fd6205921"`
[INFO] [stdout] 656bf8507624b1719d12fd07a46e8e83a3a5b07521a01507feef803fd6205921