[INFO] cloning repository https://github.com/ul/sound-garden-2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ul/sound-garden-2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ful%2Fsound-garden-2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ful%2Fsound-garden-2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c1448401e6c41c70256ee33551a2371570ac884
[INFO] checking ul/sound-garden-2 against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ful%2Fsound-garden-2" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ul/sound-garden-2 on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ul/sound-garden-2
[INFO] finished tweaking git repo https://github.com/ul/sound-garden-2
[INFO] tweaked toml for git repo https://github.com/ul/sound-garden-2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ul/sound-garden-2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1b673e112b6a76793baf1e12097e07b4bba546bd4d6cbb02054ebc8e243924ff
[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" "1b673e112b6a76793baf1e12097e07b4bba546bd4d6cbb02054ebc8e243924ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b673e112b6a76793baf1e12097e07b4bba546bd4d6cbb02054ebc8e243924ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b673e112b6a76793baf1e12097e07b4bba546bd4d6cbb02054ebc8e243924ff", kill_on_drop: false }`
[INFO] [stdout] 1b673e112b6a76793baf1e12097e07b4bba546bd4d6cbb02054ebc8e243924ff
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f52bc67080a6f38d7e0878c64d6b1e98e140e0b659d5e001ceebf32c668971f
[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" "1f52bc67080a6f38d7e0878c64d6b1e98e140e0b659d5e001ceebf32c668971f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking synth-modules v0.1.0 (/opt/rustwide/workdir/synth-modules)
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking crossbeam v0.2.12
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking crossbeam-utils v0.6.1
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking regex-syntax v0.6.3
[INFO] [stderr]     Checking term v0.5.1
[INFO] [stderr]     Checking rosc v0.1.5
[INFO] [stderr]     Checking itertools v0.7.8
[INFO] [stderr]     Checking toml v0.4.8
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.23
[INFO] [stderr]     Checking crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking smallvec v0.6.5
[INFO] [stderr]     Checking lock_api v0.1.4
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking isatty v0.1.9
[INFO] [stderr]     Checking jack-sys v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling syn v0.15.20
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking jack v0.6.0
[INFO] [stderr]     Checking libflate v0.1.18
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]     Checking slog-scope v4.0.1
[INFO] [stderr]     Checking slog-async v2.3.0
[INFO] [stderr]     Checking slog-stdlog v3.0.2
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking slog-term v2.4.0
[INFO] [stderr]     Checking crossbeam-channel v0.3.1
[INFO] [stderr]     Checking regex v1.0.6
[INFO] [stderr]     Checking jack-modules v0.1.0 (/opt/rustwide/workdir/jack-modules)
[INFO] [stdout] warning: field is never read: `is_alive`
[INFO] [stdout]  --> jack-modules/src/notification.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     is_alive: Option<Sender<Void>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `is_alive`
[INFO] [stdout]  --> jack-modules/src/notification.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     is_alive: Option<Sender<Void>>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking sound-garden v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling trackable_derive v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking slog-kvfilter v0.7.0
[INFO] [stderr]     Checking trackable v0.2.20
[INFO] [stderr]     Checking sloggers v0.3.1
[INFO] [stderr]     Checking jack-stack v0.1.0 (/opt/rustwide/workdir/jack-stack)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.86s
[INFO] running `Command { std: "docker" "inspect" "1f52bc67080a6f38d7e0878c64d6b1e98e140e0b659d5e001ceebf32c668971f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f52bc67080a6f38d7e0878c64d6b1e98e140e0b659d5e001ceebf32c668971f", kill_on_drop: false }`
[INFO] [stdout] 1f52bc67080a6f38d7e0878c64d6b1e98e140e0b659d5e001ceebf32c668971f