[INFO] fetching crate corrida 0.1.0...
[INFO] checking corrida-0.1.0 against master#61cc47e367d7be91e13bcd01e4e96e0e233d4f6d for pr-133502-19
[INFO] extracting crate corrida 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate corrida 0.1.0
[INFO] finished tweaking crates.io crate corrida 0.1.0
[INFO] tweaked toml for crates.io crate corrida 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate corrida 0.1.0 on toolchain 61cc47e367d7be91e13bcd01e4e96e0e233d4f6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate corrida 0.1.0 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" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fc245d918766e553bf056d03f07c726d2d5822cddbfb1529fb6cbd3d27b91839
[INFO] running `Command { std: "docker" "start" "-a" "fc245d918766e553bf056d03f07c726d2d5822cddbfb1529fb6cbd3d27b91839", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc245d918766e553bf056d03f07c726d2d5822cddbfb1529fb6cbd3d27b91839", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc245d918766e553bf056d03f07c726d2d5822cddbfb1529fb6cbd3d27b91839", kill_on_drop: false }`
[INFO] [stdout] fc245d918766e553bf056d03f07c726d2d5822cddbfb1529fb6cbd3d27b91839
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+61cc47e367d7be91e13bcd01e4e96e0e233d4f6d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac49072ac8b9134d8e35380032eb2034a30b7927d9a73628072fc87f456056cb
[INFO] running `Command { std: "docker" "start" "-a" "ac49072ac8b9134d8e35380032eb2034a30b7927d9a73628072fc87f456056cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking bumpalo v3.16.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling const_format_proc_macros v0.2.34
[INFO] [stderr]     Checking const_format v0.2.34
[INFO] [stderr]     Checking corrida v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `big`
[INFO] [stdout]    --> src/lib.rs:222:17
[INFO] [stdout]     |
[INFO] [stdout] 222 |             let big = arena.alloc([1; 10_000]);
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_big`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/basic_structures.rs:26:30
[INFO] [stdout]    |
[INFO] [stdout] 26 |         pub fn iter_in_order(&self) -> IterInOrder<T> {
[INFO] [stdout]    |                              ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 26 |         pub fn iter_in_order(&self) -> IterInOrder<'_, T> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/basic_structures.rs:26:30
[INFO] [stdout]    |
[INFO] [stdout] 26 |         pub fn iter_in_order(&self) -> IterInOrder<T> {
[INFO] [stdout]    |                              ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 26 |         pub fn iter_in_order(&self) -> IterInOrder<'_, T> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.47s
[INFO] running `Command { std: "docker" "inspect" "ac49072ac8b9134d8e35380032eb2034a30b7927d9a73628072fc87f456056cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac49072ac8b9134d8e35380032eb2034a30b7927d9a73628072fc87f456056cb", kill_on_drop: false }`
[INFO] [stdout] ac49072ac8b9134d8e35380032eb2034a30b7927d9a73628072fc87f456056cb