[INFO] fetching crate rectcut-rs 0.1.2...
[INFO] building rectcut-rs-0.1.2 against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error
[INFO] extracting crate rectcut-rs 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rectcut-rs 0.1.2 on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rectcut-rs 0.1.2
[INFO] finished tweaking crates.io crate rectcut-rs 0.1.2
[INFO] tweaked toml for crates.io crate rectcut-rs 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6353f50695fad4f04c9827ea9bc8758c5f2be5e8b8238e18fcefae9baa35486b
[INFO] running `Command { std: "docker" "start" "-a" "6353f50695fad4f04c9827ea9bc8758c5f2be5e8b8238e18fcefae9baa35486b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6353f50695fad4f04c9827ea9bc8758c5f2be5e8b8238e18fcefae9baa35486b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6353f50695fad4f04c9827ea9bc8758c5f2be5e8b8238e18fcefae9baa35486b", kill_on_drop: false }`
[INFO] [stdout] 6353f50695fad4f04c9827ea9bc8758c5f2be5e8b8238e18fcefae9baa35486b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afdbdaaa322dd41a333cc90fffd293c0b14c5524081c5f3ac8cb42d7144d4509
[INFO] running `Command { std: "docker" "start" "-a" "afdbdaaa322dd41a333cc90fffd293c0b14c5524081c5f3ac8cb42d7144d4509", kill_on_drop: false }`
[INFO] [stderr]    Compiling rectcut-rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `RectCut` is never constructed
[INFO] [stdout]    --> src/lib.rs:331:8
[INFO] [stdout]     |
[INFO] [stdout] 331 | struct RectCut {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RectCut` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `cut` are never used
[INFO] [stdout]    --> src/lib.rs:338:12
[INFO] [stdout]     |
[INFO] [stdout] 336 | impl RectCut {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 337 |     /// Create a new RectCut.
[INFO] [stdout] 338 |     pub fn new(rect: Rect, side: RectCutSide) -> RectCut {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 344 |     pub fn cut(&mut self, a: f32) -> Rect {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "afdbdaaa322dd41a333cc90fffd293c0b14c5524081c5f3ac8cb42d7144d4509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afdbdaaa322dd41a333cc90fffd293c0b14c5524081c5f3ac8cb42d7144d4509", kill_on_drop: false }`
[INFO] [stdout] afdbdaaa322dd41a333cc90fffd293c0b14c5524081c5f3ac8cb42d7144d4509
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1b9eaa0b2612c650fc1e2983bda4b5f6b85208618b24769bee477d3681fbeff
[INFO] running `Command { std: "docker" "start" "-a" "f1b9eaa0b2612c650fc1e2983bda4b5f6b85208618b24769bee477d3681fbeff", kill_on_drop: false }`
[INFO] [stderr]    Compiling rectcut-rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `RectCut` is never constructed
[INFO] [stdout]    --> src/lib.rs:331:8
[INFO] [stdout]     |
[INFO] [stdout] 331 | struct RectCut {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RectCut` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `cut` are never used
[INFO] [stdout]    --> src/lib.rs:338:12
[INFO] [stdout]     |
[INFO] [stdout] 336 | impl RectCut {
[INFO] [stdout]     | ------------ associated items in this implementation
[INFO] [stdout] 337 |     /// Create a new RectCut.
[INFO] [stdout] 338 |     pub fn new(rect: Rect, side: RectCutSide) -> RectCut {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 344 |     pub fn cut(&mut self, a: f32) -> Rect {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "f1b9eaa0b2612c650fc1e2983bda4b5f6b85208618b24769bee477d3681fbeff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b9eaa0b2612c650fc1e2983bda4b5f6b85208618b24769bee477d3681fbeff", kill_on_drop: false }`
[INFO] [stdout] f1b9eaa0b2612c650fc1e2983bda4b5f6b85208618b24769bee477d3681fbeff