[INFO] fetching crate umgap 1.1.0...
[INFO] checking umgap-1.1.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate umgap 1.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate umgap 1.1.0 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate umgap 1.1.0
[INFO] finished tweaking crates.io crate umgap 1.1.0
[INFO] tweaked toml for crates.io crate umgap 1.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate umgap 1.1.0 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded strum v0.17.1
[INFO] [stderr]   Downloaded strum_macros v0.17.1
[INFO] [stderr]   Downloaded attohttpc v0.15.0
[INFO] [stderr]   Downloaded fst v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66e66673d25fb7199e1bafe0d5b317479100ac71b3a03674f6895755cba4e062
[INFO] running `Command { std: "docker" "start" "-a" "66e66673d25fb7199e1bafe0d5b317479100ac71b3a03674f6895755cba4e062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66e66673d25fb7199e1bafe0d5b317479100ac71b3a03674f6895755cba4e062", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66e66673d25fb7199e1bafe0d5b317479100ac71b3a03674f6895755cba4e062", kill_on_drop: false }`
[INFO] [stdout] 66e66673d25fb7199e1bafe0d5b317479100ac71b3a03674f6895755cba4e062
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d2f336adf88d5b0b1703e3936400fe85f0f92fc8e39752053d25aaeab5111eb
[INFO] running `Command { std: "docker" "start" "-a" "2d2f336adf88d5b0b1703e3936400fe85f0f92fc8e39752053d25aaeab5111eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling cc v1.0.88
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking bitflags v2.4.2
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]     Checking unicode-width v0.1.11
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]     Checking gimli v0.28.1
[INFO] [stderr]     Checking ryu v1.0.17
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking rustc-demangle v0.1.23
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking object v0.32.2
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking unicode-normalization v0.1.23
[INFO] [stderr]     Checking csv-core v0.1.11
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking strum v0.17.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking http v0.2.11
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling syn v2.0.51
[INFO] [stderr]     Checking idna v0.5.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling openssl-sys v0.9.101
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]     Checking rayon v1.9.0
[INFO] [stderr]     Checking url v2.5.0
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking regex-automata v0.4.5
[INFO] [stderr]     Checking fst v0.3.5
[INFO] [stderr]     Checking addr2line v0.21.0
[INFO] [stderr]     Checking csv v1.3.0
[INFO] [stderr]     Checking regex v1.10.3
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling strum_macros v0.17.1
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking attohttpc v0.15.0
[INFO] [stderr]     Checking umgap v1.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rmq/mix.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 75 |                     let mut weight = weights.entry(left).or_insert_with(Weights::new);
[INFO] [stdout]    |                         ----^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rmq/mix.rs:75:25
[INFO] [stdout]    |
[INFO] [stdout] 75 |                     let mut weight = weights.entry(left).or_insert_with(Weights::new);
[INFO] [stdout]    |                         ----^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` 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 17.31s
[INFO] running `Command { std: "docker" "inspect" "2d2f336adf88d5b0b1703e3936400fe85f0f92fc8e39752053d25aaeab5111eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d2f336adf88d5b0b1703e3936400fe85f0f92fc8e39752053d25aaeab5111eb", kill_on_drop: false }`
[INFO] [stdout] 2d2f336adf88d5b0b1703e3936400fe85f0f92fc8e39752053d25aaeab5111eb