[INFO] cloning repository https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafacostavilla%2Frust-oop-polymorphism-trait-object-gui", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafacostavilla%2Frust-oop-polymorphism-trait-object-gui'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ece92ad5cfa52f371e1f452072672fe45ef11fe4
[INFO] checking rafacostavilla/rust-oop-polymorphism-trait-object-gui against try#59a256151e578f525a26127f2c3e3a6c7e2982ca for pr-149291-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafacostavilla%2Frust-oop-polymorphism-trait-object-gui" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui
[INFO] finished tweaking git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui
[INFO] tweaked toml for git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui on toolchain 59a256151e578f525a26127f2c3e3a6c7e2982ca
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui 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" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking rafacostavilla/rust-oop-polymorphism-trait-object-gui against try#59a256151e578f525a26127f2c3e3a6c7e2982ca for pr-149291-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frafacostavilla%2Frust-oop-polymorphism-trait-object-gui" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui
[INFO] finished tweaking git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui
[INFO] tweaked toml for git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui on toolchain 59a256151e578f525a26127f2c3e3a6c7e2982ca
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui 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" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4900404bcd64a13f5dab2ac8d5f1ba904a602db17d8bca844768ec6def32f005
[INFO] running `Command { std: "docker" "start" "-a" "4900404bcd64a13f5dab2ac8d5f1ba904a602db17d8bca844768ec6def32f005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4900404bcd64a13f5dab2ac8d5f1ba904a602db17d8bca844768ec6def32f005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4900404bcd64a13f5dab2ac8d5f1ba904a602db17d8bca844768ec6def32f005", kill_on_drop: false }`
[INFO] [stdout] 4900404bcd64a13f5dab2ac8d5f1ba904a602db17d8bca844768ec6def32f005
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+59a256151e578f525a26127f2c3e3a6c7e2982ca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 81f8cc005868614b9054a25341036ff8dccc56dd4e94a1ec5cc1b0cd8ea34b89
[INFO] running `Command { std: "docker" "start" "-a" "81f8cc005868614b9054a25341036ff8dccc56dd4e94a1ec5cc1b0cd8ea34b89", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-oop-polymorphism-trait-object-gui v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `length` is never read
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct ScrollView{
[INFO] [stdout]   |        ---------- field in this struct
[INFO] [stdout] 5 |     length: i32
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ScrollView` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `length` is never read
[INFO] [stdout]  --> src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct ScrollView{
[INFO] [stdout]   |        ---------- field in this struct
[INFO] [stdout] 5 |     length: i32
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ScrollView` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "81f8cc005868614b9054a25341036ff8dccc56dd4e94a1ec5cc1b0cd8ea34b89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81f8cc005868614b9054a25341036ff8dccc56dd4e94a1ec5cc1b0cd8ea34b89", kill_on_drop: false }`
[INFO] [stdout] 81f8cc005868614b9054a25341036ff8dccc56dd4e94a1ec5cc1b0cd8ea34b89