[INFO] fetching crate duplicate-finder 0.0.23...
[INFO] checking duplicate-finder-0.0.23 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate duplicate-finder 0.0.23 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate duplicate-finder 0.0.23 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate duplicate-finder 0.0.23
[INFO] finished tweaking crates.io crate duplicate-finder 0.0.23
[INFO] tweaked toml for crates.io crate duplicate-finder 0.0.23 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate duplicate-finder 0.0.23 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 084f040e0cae6b145f589451cca1b625bd2d7a9984e4e431ef8e9d805bbd3800
[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" "084f040e0cae6b145f589451cca1b625bd2d7a9984e4e431ef8e9d805bbd3800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "084f040e0cae6b145f589451cca1b625bd2d7a9984e4e431ef8e9d805bbd3800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "084f040e0cae6b145f589451cca1b625bd2d7a9984e4e431ef8e9d805bbd3800", kill_on_drop: false }`
[INFO] [stdout] 084f040e0cae6b145f589451cca1b625bd2d7a9984e4e431ef8e9d805bbd3800
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "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] 52fc8805d4c1d40c6fb3aef2a00356528508cfa87a057012d7e8f89c24f1e655
[INFO] running `Command { std: "docker" "start" "-a" "52fc8805d4c1d40c6fb3aef2a00356528508cfa87a057012d7e8f89c24f1e655", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking siphasher v0.3.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling test-case v0.3.3
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking duplicate-finder v0.0.23 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]   --> src/convert.rs:13:37
[INFO] [stdout]    |
[INFO] [stdout] 13 |         x if x < 0 => (0..(-x)).map({ |_| ' ' }).chain(chars).collect::<String>(),
[INFO] [stdout]    |                                     ^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]   --> src/convert.rs:13:37
[INFO] [stdout]    |
[INFO] [stdout] 13 |         x if x < 0 => (0..(-x)).map({ |_| ' ' }).chain(chars).collect::<String>(),
[INFO] [stdout]    |                                     ^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` 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 45.11s
[INFO] running `Command { std: "docker" "inspect" "52fc8805d4c1d40c6fb3aef2a00356528508cfa87a057012d7e8f89c24f1e655", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52fc8805d4c1d40c6fb3aef2a00356528508cfa87a057012d7e8f89c24f1e655", kill_on_drop: false }`
[INFO] [stdout] 52fc8805d4c1d40c6fb3aef2a00356528508cfa87a057012d7e8f89c24f1e655