[INFO] fetching crate piet-web 0.6.2...
[INFO] checking piet-web-0.6.2 against master#0f6e1ae67854c3c44726e8376144c16b465fe7c6 for pr-129392
[INFO] extracting crate piet-web 0.6.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate piet-web 0.6.2 on toolchain 0f6e1ae67854c3c44726e8376144c16b465fe7c6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate piet-web 0.6.2
[INFO] finished tweaking crates.io crate piet-web 0.6.2
[INFO] tweaked toml for crates.io crate piet-web 0.6.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 49 packages to latest compatible versions
[INFO] [stderr]       Adding kurbo v0.9.5 (latest: v0.11.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "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 piet v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71c32265437db4bc91edf91544eab2d538663612f79760184491831a5fa1e527
[INFO] running `Command { std: "docker" "start" "-a" "71c32265437db4bc91edf91544eab2d538663612f79760184491831a5fa1e527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71c32265437db4bc91edf91544eab2d538663612f79760184491831a5fa1e527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71c32265437db4bc91edf91544eab2d538663612f79760184491831a5fa1e527", kill_on_drop: false }`
[INFO] [stdout] 71c32265437db4bc91edf91544eab2d538663612f79760184491831a5fa1e527
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+0f6e1ae67854c3c44726e8376144c16b465fe7c6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4950678ea94f264ff4b5e929b7778873bef5f04313a139a52d0da55c196761dd
[INFO] running `Command { std: "docker" "start" "-a" "4950678ea94f264ff4b5e929b7778873bef5f04313a139a52d0da55c196761dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.93
[INFO] [stderr]    Compiling bumpalo v3.16.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.93
[INFO] [stderr]     Checking unic-char-range v0.9.0
[INFO] [stderr]     Checking unic-common v0.9.0
[INFO] [stderr]     Checking arrayvec v0.7.6
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking xi-unicode v0.3.0
[INFO] [stderr]     Checking scoped-tls v1.0.1
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking unic-ucd-version v0.9.0
[INFO] [stderr]     Checking unic-char-property v0.9.0
[INFO] [stderr]     Checking unic-ucd-bidi v0.9.0
[INFO] [stderr]     Checking kurbo v0.9.5
[INFO] [stderr]     Checking unic-bidi v0.9.0
[INFO] [stderr]     Checking piet v0.6.2
[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 piet-web v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:517:13
[INFO] [stdout]     |
[INFO] [stdout] 517 |         let mut canvas_state = self.canvas_states.last_mut().unwrap();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:517:13
[INFO] [stdout]     |
[INFO] [stdout] 517 |         let mut canvas_state = self.canvas_states.last_mut().unwrap();
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.70s
[INFO] running `Command { std: "docker" "inspect" "4950678ea94f264ff4b5e929b7778873bef5f04313a139a52d0da55c196761dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4950678ea94f264ff4b5e929b7778873bef5f04313a139a52d0da55c196761dd", kill_on_drop: false }`
[INFO] [stdout] 4950678ea94f264ff4b5e929b7778873bef5f04313a139a52d0da55c196761dd