[INFO] fetching crate fasten 0.1.13...
[INFO] testing fasten-0.1.13 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate fasten 0.1.13 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate fasten 0.1.13 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fasten 0.1.13
[INFO] finished tweaking crates.io crate fasten 0.1.13
[INFO] tweaked toml for crates.io crate fasten 0.1.13 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded statistical v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 03473ef968496b7d5061d3af0a179ebdb914e1d2c1a8145f7ba4fcc6b7ac7576
[INFO] running `Command { std: "docker" "start" "-a" "03473ef968496b7d5061d3af0a179ebdb914e1d2c1a8145f7ba4fcc6b7ac7576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03473ef968496b7d5061d3af0a179ebdb914e1d2c1a8145f7ba4fcc6b7ac7576", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03473ef968496b7d5061d3af0a179ebdb914e1d2c1a8145f7ba4fcc6b7ac7576", kill_on_drop: false }`
[INFO] [stdout] 03473ef968496b7d5061d3af0a179ebdb914e1d2c1a8145f7ba4fcc6b7ac7576
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c802df949891e54210519cef7bab98802d14020c855ef8f1ff2e927d9bde7c78
[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" "c802df949891e54210519cef7bab98802d14020c855ef8f1ff2e927d9bde7c78", kill_on_drop: false }`
[INFO] [stderr]    Compiling owning_ref v0.2.4
[INFO] [stderr]    Compiling smallvec v0.3.4
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling parking_lot v0.3.8
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling statistical v0.1.1
[INFO] [stderr]    Compiling multiqueue v0.3.2
[INFO] [stderr]    Compiling fasten v0.1.13 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/io/seq.rs:49:36
[INFO] [stdout]    |
[INFO] [stdout] 49 |     fn sanitize_id(id: &String) -> (String);
[INFO] [stdout]    |                                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/io/seq.rs:116:36
[INFO] [stdout]     |
[INFO] [stdout] 116 |     fn sanitize_id(id: &String) -> (String) {
[INFO] [stdout]     |                                    ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fasten`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name fasten_combine src/bin/fasten_combine.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debuginfo=2 -C metadata=7d2eadee68c302d2 -C extra-filename=-7d2eadee68c302d2 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern fasten=/opt/rustwide/target/debug/deps/libfasten-b8e963c38292c7e8.rlib --extern getopts=/opt/rustwide/target/debug/deps/libgetopts-c518f965bc486c62.rlib --extern multiqueue=/opt/rustwide/target/debug/deps/libmultiqueue-9baa729d4173e89e.rlib --extern rand=/opt/rustwide/target/debug/deps/librand-5d509fc47140bcd4.rlib --extern regex=/opt/rustwide/target/debug/deps/libregex-cfab1c75f832fbc6.rlib --extern statistical=/opt/rustwide/target/debug/deps/libstatistical-f3fb8f62f9fcf45a.rlib --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c802df949891e54210519cef7bab98802d14020c855ef8f1ff2e927d9bde7c78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c802df949891e54210519cef7bab98802d14020c855ef8f1ff2e927d9bde7c78", kill_on_drop: false }`
[INFO] [stdout] c802df949891e54210519cef7bab98802d14020c855ef8f1ff2e927d9bde7c78