[INFO] fetching crate div 0.4.0...
[INFO] checking div-0.4.0 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate div 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate div 0.4.0 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 div 0.4.0
[INFO] finished tweaking crates.io crate div 0.4.0
[INFO] tweaked toml for crates.io crate div 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 37 packages to latest compatible versions
[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] 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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c420fa1983b6ca899c179bdb9c3755b3d1225a075a77ff9ac96c0b37d6add2b9
[INFO] running `Command { std: "docker" "start" "-a" "c420fa1983b6ca899c179bdb9c3755b3d1225a075a77ff9ac96c0b37d6add2b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c420fa1983b6ca899c179bdb9c3755b3d1225a075a77ff9ac96c0b37d6add2b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c420fa1983b6ca899c179bdb9c3755b3d1225a075a77ff9ac96c0b37d6add2b9", kill_on_drop: false }`
[INFO] [stdout] c420fa1983b6ca899c179bdb9c3755b3d1225a075a77ff9ac96c0b37d6add2b9
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21e6943d59747621c5ff7509c24cb4b8178647d2acbcf1d89ea096311fded08f
[INFO] running `Command { std: "docker" "start" "-a" "21e6943d59747621c5ff7509c24cb4b8178647d2acbcf1d89ea096311fded08f", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.93
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling bumpalo v3.16.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.93
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.93
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.3.43
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.93
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.93
[INFO] [stderr]     Checking js-sys v0.3.70
[INFO] [stderr]     Checking console_error_panic_hook v0.1.7
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.43
[INFO] [stderr]     Checking web-sys v0.3.70
[INFO] [stderr]     Checking wasm-bindgen-test v0.3.43
[INFO] [stderr]     Checking div v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/pane.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let mut v = self.nodes.get_mut(&p)?;
[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/pane.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut v = self.nodes.get_mut(&pane_handle)?;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/pane.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let mut v = self.nodes.get_mut(&p)?;
[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/pane.rs:103:13
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut v = self.nodes.get_mut(&pane_handle)?;
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.32s
[INFO] running `Command { std: "docker" "inspect" "21e6943d59747621c5ff7509c24cb4b8178647d2acbcf1d89ea096311fded08f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21e6943d59747621c5ff7509c24cb4b8178647d2acbcf1d89ea096311fded08f", kill_on_drop: false }`
[INFO] [stdout] 21e6943d59747621c5ff7509c24cb4b8178647d2acbcf1d89ea096311fded08f