[INFO] fetching crate fabric 0.1.2...
[INFO] checking fabric-0.1.2 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate fabric 0.1.2 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate fabric 0.1.2 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate fabric 0.1.2
[INFO] finished tweaking crates.io crate fabric 0.1.2
[INFO] tweaked toml for crates.io crate fabric 0.1.2 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 33e594913e2b48514c6d7b6a8ab710771afa102fe15741c49c181e2f9722b90a
[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" "33e594913e2b48514c6d7b6a8ab710771afa102fe15741c49c181e2f9722b90a"`
[INFO] [stderr]     Checking aes_frast v0.1.5
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking bincode v1.2.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking cargo_metadata v0.5.8
[INFO] [stderr]     Checking deploy-common v0.1.2
[INFO] [stderr]     Checking fabric v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] error: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:325:8
[INFO] [stderr]     |
[INFO] [stderr] 325 |             let mut pending = &sync::RwLock::new(&mut pending_inner);
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/main.rs:55:23
[INFO] [stderr]     |
[INFO] [stderr] 55  | #![deny(missing_docs, warnings, deprecated)]
[INFO] [stderr]     |                       ^^^^^^^^
[INFO] [stderr]     = note: `#[deny(unused_mut)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: variable does not need to be mutable
[INFO] [stderr]    --> src/scheduler.rs:173:8
[INFO] [stderr]     |
[INFO] [stderr] 173 |             let mut stream = stream.unwrap();
[INFO] [stderr]     |                 ----^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `fabric`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:325:8
[INFO] [stderr]     |
[INFO] [stderr] 325 |             let mut pending = &sync::RwLock::new(&mut pending_inner);
[INFO] [stderr]     |                 ----^^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]    --> src/main.rs:55:23
[INFO] [stderr]     |
[INFO] [stderr] 55  | #![deny(missing_docs, warnings, deprecated)]
[INFO] [stderr]     |                       ^^^^^^^^
[INFO] [stderr]     = note: `#[deny(unused_mut)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: variable does not need to be mutable
[INFO] [stderr]    --> src/scheduler.rs:173:8
[INFO] [stderr]     |
[INFO] [stderr] 173 |             let mut stream = stream.unwrap();
[INFO] [stderr]     |                 ----^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `fabric`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "33e594913e2b48514c6d7b6a8ab710771afa102fe15741c49c181e2f9722b90a"`
[INFO] running `"docker" "rm" "-f" "33e594913e2b48514c6d7b6a8ab710771afa102fe15741c49c181e2f9722b90a"`
[INFO] [stdout] 33e594913e2b48514c6d7b6a8ab710771afa102fe15741c49c181e2f9722b90a