[INFO] fetching crate tlnat 0.1.2...
[INFO] testing tlnat-0.1.2 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate tlnat 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate tlnat 0.1.2 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tlnat 0.1.2
[INFO] finished tweaking crates.io crate tlnat 0.1.2
[INFO] tweaked toml for crates.io crate tlnat 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fbb1c99dfddc36f24c055f778b46c3aa0530f895d25bf1628ffac55ffec5309
[INFO] running `Command { std: "docker" "start" "-a" "8fbb1c99dfddc36f24c055f778b46c3aa0530f895d25bf1628ffac55ffec5309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fbb1c99dfddc36f24c055f778b46c3aa0530f895d25bf1628ffac55ffec5309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fbb1c99dfddc36f24c055f778b46c3aa0530f895d25bf1628ffac55ffec5309", kill_on_drop: false }`
[INFO] [stdout] 8fbb1c99dfddc36f24c055f778b46c3aa0530f895d25bf1628ffac55ffec5309
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f05697466391997026b9730f5ac7d17bcfc436dc11919b51693250bec4273f5f
[INFO] running `Command { std: "docker" "start" "-a" "f05697466391997026b9730f5ac7d17bcfc436dc11919b51693250bec4273f5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling tlnat v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> src/lib.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(const_fn)]
[INFO] [stdout]    |            ^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/lib.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | / macro_rules! integral_constant {
[INFO] [stdout] 27 | |     ($name : ident, $val : expr) => {
[INFO] [stdout] 28 | |         #[derive(Debug)]
[INFO] [stdout] 29 | |         pub struct $name;
[INFO] [stdout] ...  |
[INFO] [stdout] 42 | |     }
[INFO] [stdout] 43 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tlnat`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f05697466391997026b9730f5ac7d17bcfc436dc11919b51693250bec4273f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f05697466391997026b9730f5ac7d17bcfc436dc11919b51693250bec4273f5f", kill_on_drop: false }`
[INFO] [stdout] f05697466391997026b9730f5ac7d17bcfc436dc11919b51693250bec4273f5f