[INFO] cloning repository https://github.com/FauxFaux/rust-tone
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FauxFaux/rust-tone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Frust-tone", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Frust-tone'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3fe0de95843a4d193e8df15e24c3122c89eb3736
[INFO] checking FauxFaux/rust-tone against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Frust-tone" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FauxFaux/rust-tone on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FauxFaux/rust-tone
[INFO] finished tweaking git repo https://github.com/FauxFaux/rust-tone
[INFO] tweaked toml for git repo https://github.com/FauxFaux/rust-tone written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/FauxFaux/rust-tone already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] 39d1188eacea6d15caa4ed61f533b874b88dc29953afcbdf87dbba564830e30a
[INFO] running `Command { std: "docker" "start" "-a" "39d1188eacea6d15caa4ed61f533b874b88dc29953afcbdf87dbba564830e30a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39d1188eacea6d15caa4ed61f533b874b88dc29953afcbdf87dbba564830e30a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39d1188eacea6d15caa4ed61f533b874b88dc29953afcbdf87dbba564830e30a", kill_on_drop: false }`
[INFO] [stdout] 39d1188eacea6d15caa4ed61f533b874b88dc29953afcbdf87dbba564830e30a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] cdf1ac3c0649f8c536cdd43a7bacfbf176d447f1dec16dd3843507cba34fc94c
[INFO] running `Command { std: "docker" "start" "-a" "cdf1ac3c0649f8c536cdd43a7bacfbf176d447f1dec16dd3843507cba34fc94c", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling num-traits v0.2.4
[INFO] [stderr]    Compiling num-integer v0.1.38
[INFO] [stderr]    Compiling libpulse-sys v1.1.0
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling cc v1.0.17
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling serde v1.0.66
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking bit-vec v0.4.4
[INFO] [stderr]    Compiling libpulse-simple-sys v1.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.0.0
[INFO] [stderr]     Checking array-macro v1.0.2
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]     Checking reexport-proc-macro v1.0.4
[INFO] [stderr]     Checking unicode-segmentation v1.2.1
[INFO] [stderr]     Checking enumset v0.3.10
[INFO] [stderr]     Checking xi-unicode v0.1.0
[INFO] [stderr]     Checking cast v0.2.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.6
[INFO] [stderr]     Checking log v0.4.2
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]    Compiling quote v0.6.3
[INFO] [stderr]    Compiling syn v0.14.2
[INFO] [stderr]     Checking libpulse-binding v1.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking chan v0.1.21
[INFO] [stderr]     Checking libpulse-simple-binding v1.2.0
[INFO] [stderr]     Checking chan-signal v0.3.1
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking backtrace v0.3.8
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]    Compiling enum-map-derive v0.2.10
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking enum-map v0.2.35
[INFO] [stderr]     Checking cursive v0.8.2
[INFO] [stderr]     Checking rust-tone v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Simple` is imported redundantly
[INFO] [stdout]   --> src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | use psimple::Simple;
[INFO] [stdout]    |     --------------- the item `Simple` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 24 |     use psimple::Simple;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Simple` is imported redundantly
[INFO] [stdout]   --> src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 19 | use psimple::Simple;
[INFO] [stdout]    |     --------------- the item `Simple` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 24 |     use psimple::Simple;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` 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]     Finished dev [unoptimized + debuginfo] target(s) in 38.43s
[INFO] running `Command { std: "docker" "inspect" "cdf1ac3c0649f8c536cdd43a7bacfbf176d447f1dec16dd3843507cba34fc94c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cdf1ac3c0649f8c536cdd43a7bacfbf176d447f1dec16dd3843507cba34fc94c", kill_on_drop: false }`
[INFO] [stdout] cdf1ac3c0649f8c536cdd43a7bacfbf176d447f1dec16dd3843507cba34fc94c