[INFO] cloning repository https://github.com/Pancia/player-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Pancia/player-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPancia%2Fplayer-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPancia%2Fplayer-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23da781b31f06fe9e3dc49c093a92e2b90087cb3
[INFO] checking Pancia/player-rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPancia%2Fplayer-rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Pancia/player-rs on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Pancia/player-rs
[INFO] finished tweaking git repo https://github.com/Pancia/player-rs
[INFO] tweaked toml for git repo https://github.com/Pancia/player-rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Pancia/player-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded atty v0.2.3
[INFO] [stderr]   Downloaded textwrap v0.9.0
[INFO] [stderr]   Downloaded either v1.4.0
[INFO] [stderr]   Downloaded fuchsia-zircon-sys v0.2.0
[INFO] [stderr]   Downloaded fuchsia-zircon v0.2.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.31
[INFO] [stderr]   Downloaded rand v0.3.18
[INFO] [stderr]   Downloaded clap v2.27.1
[INFO] [stderr]   Downloaded libc v0.2.33
[INFO] [stderr]   Downloaded uuid v0.4.0
[INFO] [stderr]   Downloaded itertools v0.7.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9c977770ac8ac9975fab0c6475c71073c279bfec0e30f91ec24a91c2dc430ab
[INFO] running `Command { std: "docker" "start" "-a" "c9c977770ac8ac9975fab0c6475c71073c279bfec0e30f91ec24a91c2dc430ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9c977770ac8ac9975fab0c6475c71073c279bfec0e30f91ec24a91c2dc430ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9c977770ac8ac9975fab0c6475c71073c279bfec0e30f91ec24a91c2dc430ab", kill_on_drop: false }`
[INFO] [stdout] c9c977770ac8ac9975fab0c6475c71073c279bfec0e30f91ec24a91c2dc430ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b47e989d08250bb2f53f7bd35705332da9c0eefa383ff6ab8ae2fc7c4c1281b
[INFO] running `Command { std: "docker" "start" "-a" "3b47e989d08250bb2f53f7bd35705332da9c0eefa383ff6ab8ae2fc7c4c1281b", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.33
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking log v0.3.8
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking vec_map v0.8.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking either v1.4.0
[INFO] [stderr]     Checking uuid v0.4.0
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking itertools v0.7.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]     Checking clap v2.27.1
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking quickcheck v0.4.1
[INFO] [stderr]     Checking player-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/shuffle.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{self, Rng};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern crate rand;
[INFO] [stdout]   | ------------------ the item `rand` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `rand` is imported redundantly
[INFO] [stdout]  --> src/shuffle.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | use rand::{self, Rng};
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern crate rand;
[INFO] [stdout]   | ------------------ the item `rand` is already imported here
[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` profile [unoptimized + debuginfo] target(s) in 4.65s
[INFO] running `Command { std: "docker" "inspect" "3b47e989d08250bb2f53f7bd35705332da9c0eefa383ff6ab8ae2fc7c4c1281b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b47e989d08250bb2f53f7bd35705332da9c0eefa383ff6ab8ae2fc7c4c1281b", kill_on_drop: false }`
[INFO] [stdout] 3b47e989d08250bb2f53f7bd35705332da9c0eefa383ff6ab8ae2fc7c4c1281b