[INFO] fetching crate delay_line 0.1.2...
[INFO] testing delay_line-0.1.2 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate delay_line 0.1.2 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate delay_line 0.1.2
[INFO] finished tweaking crates.io crate delay_line 0.1.2
[INFO] tweaked toml for crates.io crate delay_line 0.1.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate delay_line 0.1.2 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate delay_line 0.1.2 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70784ad04dccfeeeffcd8b69abc432f0c938f3ff2aef16bb78f70becbdd4c749
[INFO] running `Command { std: "docker" "start" "-a" "70784ad04dccfeeeffcd8b69abc432f0c938f3ff2aef16bb78f70becbdd4c749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70784ad04dccfeeeffcd8b69abc432f0c938f3ff2aef16bb78f70becbdd4c749", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70784ad04dccfeeeffcd8b69abc432f0c938f3ff2aef16bb78f70becbdd4c749", kill_on_drop: false }`
[INFO] [stdout] 70784ad04dccfeeeffcd8b69abc432f0c938f3ff2aef16bb78f70becbdd4c749
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d9e6bbfd2f08475cb0140b8589329c30d5a1419fcddda803a2d79068486f492
[INFO] running `Command { std: "docker" "start" "-a" "6d9e6bbfd2f08475cb0140b8589329c30d5a1419fcddda803a2d79068486f492", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling delay_line v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `inherent_associated_types` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | #![feature(inherent_associated_types)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #8995 <https://github.com/rust-lang/rust/issues/8995> for more information
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `let_chains` has been stable since 1.88.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(let_chains)]
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Output` not found for `DelayLine<T, A>` in the current scope
[INFO] [stdout]     --> src/lib.rs:1047:68
[INFO] [stdout]      |
[INFO] [stdout]   76 | pub struct DelayLine<T, A = Global>
[INFO] [stdout]      | ----------------------------------- associated type `Output` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 1047 |     extern "rust-call" fn call_once(mut self, (x,): (T,)) -> Self::Output
[INFO] [stdout]      |                                                                    ^^^^^^ associated item not found in `DelayLine<T, A>`
[INFO] [stdout]      |
[INFO] [stdout]      = note: the associated type was found for
[INFO] [stdout]              
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Output` not found for `DelayLine<T, A>` in the current scope
[INFO] [stdout]     --> src/lib.rs:1056:68
[INFO] [stdout]      |
[INFO] [stdout]   76 | pub struct DelayLine<T, A = Global>
[INFO] [stdout]      | ----------------------------------- associated type `Output` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 1056 |     extern "rust-call" fn call_mut(&mut self, (x,): (T,)) -> Self::Output
[INFO] [stdout]      |                                                                    ^^^^^^ associated item not found in `DelayLine<T, A>`
[INFO] [stdout]      |
[INFO] [stdout]      = note: the associated type was found for
[INFO] [stdout]              
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0220`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `delay_line` (lib) due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6d9e6bbfd2f08475cb0140b8589329c30d5a1419fcddda803a2d79068486f492", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d9e6bbfd2f08475cb0140b8589329c30d5a1419fcddda803a2d79068486f492", kill_on_drop: false }`
[INFO] [stdout] 6d9e6bbfd2f08475cb0140b8589329c30d5a1419fcddda803a2d79068486f492