[INFO] fetching crate duplicate-finder 0.0.23...
[INFO] checking duplicate-finder-0.0.23 against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] extracting crate duplicate-finder 0.0.23 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate duplicate-finder 0.0.23 on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "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-4/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" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fda1c761f9cb615e8d846bead8bee6a943f92a6851d6adaa9d5619f8c9ac989
[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" "5fda1c761f9cb615e8d846bead8bee6a943f92a6851d6adaa9d5619f8c9ac989", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fda1c761f9cb615e8d846bead8bee6a943f92a6851d6adaa9d5619f8c9ac989", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fda1c761f9cb615e8d846bead8bee6a943f92a6851d6adaa9d5619f8c9ac989", kill_on_drop: false }`
[INFO] [stdout] 5fda1c761f9cb615e8d846bead8bee6a943f92a6851d6adaa9d5619f8c9ac989
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 414c06ee739d900a751e6abe14ff5e5fe7c25aaabde957cd0b0ac9ea95309adc
[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" "414c06ee739d900a751e6abe14ff5e5fe7c25aaabde957cd0b0ac9ea95309adc", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.5
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking siphasher v0.3.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling test-case v0.3.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]    Compiling quote v1.0.2
[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 42.29s
[INFO] running `Command { std: "docker" "inspect" "414c06ee739d900a751e6abe14ff5e5fe7c25aaabde957cd0b0ac9ea95309adc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "414c06ee739d900a751e6abe14ff5e5fe7c25aaabde957cd0b0ac9ea95309adc", kill_on_drop: false }`
[INFO] [stdout] 414c06ee739d900a751e6abe14ff5e5fe7c25aaabde957cd0b0ac9ea95309adc