[INFO] fetching crate gtk-ui-builder 0.2.0...
[INFO] checking gtk-ui-builder-0.2.0 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate gtk-ui-builder 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate gtk-ui-builder 0.2.0
[INFO] finished tweaking crates.io crate gtk-ui-builder 0.2.0
[INFO] tweaked toml for crates.io crate gtk-ui-builder 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate gtk-ui-builder 0.2.0 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 98 packages to latest compatible versions
[INFO] [stderr]       Adding gtk4 v0.4.9 (available: v0.10.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31d8ae469045fa984bc8572526aead86f412caeaf0243c8092e89f7ae44c346c
[INFO] running `Command { std: "docker" "start" "-a" "31d8ae469045fa984bc8572526aead86f412caeaf0243c8092e89f7ae44c346c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31d8ae469045fa984bc8572526aead86f412caeaf0243c8092e89f7ae44c346c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31d8ae469045fa984bc8572526aead86f412caeaf0243c8092e89f7ae44c346c", kill_on_drop: false }`
[INFO] [stdout] 31d8ae469045fa984bc8572526aead86f412caeaf0243c8092e89f7ae44c346c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 82773c6e41c7a3e6631a6a208c3a53e9f6c575f4453043bf48c7c97aaf16d651
[INFO] running `Command { std: "docker" "start" "-a" "82773c6e41c7a3e6631a6a208c3a53e9f6c575f4453043bf48c7c97aaf16d651", kill_on_drop: false }`
[INFO] [stderr]     Checking gtk-ui-builder v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ast/entries/object.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut signals = String::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: unused variable: `begin`
[INFO] [stdout]    --> src/parser/parser.rs:132:55
[INFO] [stdout]     |
[INFO] [stdout] 132 |                         if let Token::CurlyBrackets { begin, end, .. } = tokens[i + 2] {
[INFO] [stdout]     |                                                       ^^^^^-
[INFO] [stdout]     |                                                       |
[INFO] [stdout]     |                                                       help: try removing the field
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/parser/parser.rs:132:62
[INFO] [stdout]     |
[INFO] [stdout] 132 |                         if let Token::CurlyBrackets { begin, end, .. } = tokens[i + 2] {
[INFO] [stdout]     |                                                              ^^^-
[INFO] [stdout]     |                                                              |
[INFO] [stdout]     |                                                              help: try removing the field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/ast/entries/object.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut signals = String::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: unused variable: `begin`
[INFO] [stdout]    --> src/parser/parser.rs:132:55
[INFO] [stdout]     |
[INFO] [stdout] 132 |                         if let Token::CurlyBrackets { begin, end, .. } = tokens[i + 2] {
[INFO] [stdout]     |                                                       ^^^^^-
[INFO] [stdout]     |                                                       |
[INFO] [stdout]     |                                                       help: try removing the field
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> src/parser/parser.rs:132:62
[INFO] [stdout]     |
[INFO] [stdout] 132 |                         if let Token::CurlyBrackets { begin, end, .. } = tokens[i + 2] {
[INFO] [stdout]     |                                                              ^^^-
[INFO] [stdout]     |                                                              |
[INFO] [stdout]     |                                                              help: try removing the field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "82773c6e41c7a3e6631a6a208c3a53e9f6c575f4453043bf48c7c97aaf16d651", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82773c6e41c7a3e6631a6a208c3a53e9f6c575f4453043bf48c7c97aaf16d651", kill_on_drop: false }`
[INFO] [stdout] 82773c6e41c7a3e6631a6a208c3a53e9f6c575f4453043bf48c7c97aaf16d651