[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#8384de5d92dd9b1c0b67caa5c1c1b11bf606490f for pr-146300
[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-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-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-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rafacostavilla/rust-oop-polymorphism-trait-object-gui on toolchain 8384de5d92dd9b1c0b67caa5c1c1b11bf606490f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8384de5d92dd9b1c0b67caa5c1c1b11bf606490f" "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" "+8384de5d92dd9b1c0b67caa5c1c1b11bf606490f" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+8384de5d92dd9b1c0b67caa5c1c1b11bf606490f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df935332f47dd378f5ee24b3a613cea8fc8540b5105089ab222778f873421895
[INFO] running `Command { std: "docker" "start" "-a" "df935332f47dd378f5ee24b3a613cea8fc8540b5105089ab222778f873421895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df935332f47dd378f5ee24b3a613cea8fc8540b5105089ab222778f873421895", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df935332f47dd378f5ee24b3a613cea8fc8540b5105089ab222778f873421895", kill_on_drop: false }`
[INFO] [stdout] df935332f47dd378f5ee24b3a613cea8fc8540b5105089ab222778f873421895
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+8384de5d92dd9b1c0b67caa5c1c1b11bf606490f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b7e584062cf25614707f84544140a51b18a35237524ef7b453cda969bb4d285
[INFO] running `Command { std: "docker" "start" "-a" "2b7e584062cf25614707f84544140a51b18a35237524ef7b453cda969bb4d285", 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 0.25s
[INFO] running `Command { std: "docker" "inspect" "2b7e584062cf25614707f84544140a51b18a35237524ef7b453cda969bb4d285", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b7e584062cf25614707f84544140a51b18a35237524ef7b453cda969bb4d285", kill_on_drop: false }`
[INFO] [stdout] 2b7e584062cf25614707f84544140a51b18a35237524ef7b453cda969bb4d285