[INFO] cloning repository https://github.com/crazymerlyn/engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crazymerlyn/engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymerlyn%2Fengine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymerlyn%2Fengine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6e5ccda8b5a7022a84c9a444b47a990967dfb2e
[INFO] testing crazymerlyn/engine against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymerlyn%2Fengine" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/crazymerlyn/engine on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/crazymerlyn/engine
[INFO] finished tweaking git repo https://github.com/crazymerlyn/engine
[INFO] tweaked toml for git repo https://github.com/crazymerlyn/engine written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/crazymerlyn/engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11724efab93bffa366ae75bb5a9a38b82acbe0705f388601e28854a70897ac0d
[INFO] running `Command { std: "docker" "start" "-a" "11724efab93bffa366ae75bb5a9a38b82acbe0705f388601e28854a70897ac0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11724efab93bffa366ae75bb5a9a38b82acbe0705f388601e28854a70897ac0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11724efab93bffa366ae75bb5a9a38b82acbe0705f388601e28854a70897ac0d", kill_on_drop: false }`
[INFO] [stdout] 11724efab93bffa366ae75bb5a9a38b82acbe0705f388601e28854a70897ac0d
[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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e90f2c6988de675d90392dd85b512ec528f6785c1719f3268f2692e8911490a8
[INFO] running `Command { std: "docker" "start" "-a" "e90f2c6988de675d90392dd85b512ec528f6785c1719f3268f2692e8911490a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/boxes.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |         let mut border_left = style.lookup("border-left-width", "border-width", &zero);
[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/boxes.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut border_right = style.lookup("border-right-width", "border-width", &zero);
[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/boxes.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut padding_left = style.lookup("padding-left", "padding", &zero);
[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/boxes.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut padding_right = style.lookup("padding-right", "padding", &zero);
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "e90f2c6988de675d90392dd85b512ec528f6785c1719f3268f2692e8911490a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e90f2c6988de675d90392dd85b512ec528f6785c1719f3268f2692e8911490a8", kill_on_drop: false }`
[INFO] [stdout] e90f2c6988de675d90392dd85b512ec528f6785c1719f3268f2692e8911490a8
[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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b821984b8acfeb0cbea583893d86a09d496599355c3e153be3216c72beac5f4d
[INFO] running `Command { std: "docker" "start" "-a" "b821984b8acfeb0cbea583893d86a09d496599355c3e153be3216c72beac5f4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/boxes.rs:106:13
[INFO] [stdout]     |
[INFO] [stdout] 106 |         let mut border_left = style.lookup("border-left-width", "border-width", &zero);
[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/boxes.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let mut border_right = style.lookup("border-right-width", "border-width", &zero);
[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/boxes.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut padding_left = style.lookup("padding-left", "padding", &zero);
[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/boxes.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |         let mut padding_right = style.lookup("padding-right", "padding", &zero);
[INFO] [stdout]     |             ----^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "b821984b8acfeb0cbea583893d86a09d496599355c3e153be3216c72beac5f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b821984b8acfeb0cbea583893d86a09d496599355c3e153be3216c72beac5f4d", kill_on_drop: false }`
[INFO] [stdout] b821984b8acfeb0cbea583893d86a09d496599355c3e153be3216c72beac5f4d
[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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b6081d9ba19a768c33c646dc20d87108b589d99631a8e672ea1e8f73c276ca4
[INFO] running `Command { std: "docker" "start" "-a" "0b6081d9ba19a768c33c646dc20d87108b589d99631a8e672ea1e8f73c276ca4", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/boxes.rs:106:13
[INFO] [stderr]     |
[INFO] [stderr] 106 |         let mut border_left = style.lookup("border-left-width", "border-width", &zero);
[INFO] [stderr]     |             ----^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/boxes.rs:107:13
[INFO] [stderr]     |
[INFO] [stderr] 107 |         let mut border_right = style.lookup("border-right-width", "border-width", &zero);
[INFO] [stderr]     |             ----^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/boxes.rs:109:13
[INFO] [stderr]     |
[INFO] [stderr] 109 |         let mut padding_left = style.lookup("padding-left", "padding", &zero);
[INFO] [stderr]     |             ----^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/boxes.rs:110:13
[INFO] [stderr]     |
[INFO] [stderr] 110 |         let mut padding_right = style.lookup("padding-right", "padding", &zero);
[INFO] [stderr]     |             ----^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `engine` (bin "engine" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/engine-47d1ff8c96011433)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0b6081d9ba19a768c33c646dc20d87108b589d99631a8e672ea1e8f73c276ca4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b6081d9ba19a768c33c646dc20d87108b589d99631a8e672ea1e8f73c276ca4", kill_on_drop: false }`
[INFO] [stdout] 0b6081d9ba19a768c33c646dc20d87108b589d99631a8e672ea1e8f73c276ca4