[INFO] fetching crate repr 0.8.0...
[INFO] checking repr-0.8.0 against 1.95.0 for pr-155915
[INFO] extracting crate repr 0.8.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate repr 0.8.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate repr 0.8.0
[INFO] tweaked toml for crates.io crate repr 0.8.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate repr 0.8.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate repr 0.8.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unconst v0.13.0
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b90f20fb6a17a092b0aed217f9fd007c4cec0ab3240b1701a5fed08377551304
[INFO] running `Command { std: "docker" "start" "-a" "b90f20fb6a17a092b0aed217f9fd007c4cec0ab3240b1701a5fed08377551304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b90f20fb6a17a092b0aed217f9fd007c4cec0ab3240b1701a5fed08377551304", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b90f20fb6a17a092b0aed217f9fd007c4cec0ab3240b1701a5fed08377551304", kill_on_drop: false }`
[INFO] [stdout] b90f20fb6a17a092b0aed217f9fd007c4cec0ab3240b1701a5fed08377551304
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5756b96ee6453a3e64f4c590e706d27a641df9a8ef5bdbfb3867bd500b9065fa
[INFO] running `Command { std: "docker" "start" "-a" "5756b96ee6453a3e64f4c590e706d27a641df9a8ef5bdbfb3867bd500b9065fa", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.7.6
[INFO] [stderr]     Checking regex-syntax v0.8.7
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking regex-automata v0.4.12
[INFO] [stderr]     Checking regex v1.12.1
[INFO] [stderr]    Compiling unconst v0.13.0
[INFO] [stderr]     Checking repr v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(exact_size_is_empty)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BitXor`
[INFO] [stdout]  --> src/repr/operators.rs:5:31
[INFO] [stdout]   |
[INFO] [stdout] 5 |     ops::{Add, BitAnd, BitOr, BitXor, Mul, Range, RangeFrom, RangeFull},
[INFO] [stdout]   |                               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(exact_size_is_empty)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BitXor`
[INFO] [stdout]  --> src/repr/operators.rs:5:31
[INFO] [stdout]   |
[INFO] [stdout] 5 |     ops::{Add, BitAnd, BitOr, BitXor, Mul, Range, RangeFrom, RangeFull},
[INFO] [stdout]   |                               ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `repr` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `repr` (lib test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "5756b96ee6453a3e64f4c590e706d27a641df9a8ef5bdbfb3867bd500b9065fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5756b96ee6453a3e64f4c590e706d27a641df9a8ef5bdbfb3867bd500b9065fa", kill_on_drop: false }`
[INFO] [stdout] 5756b96ee6453a3e64f4c590e706d27a641df9a8ef5bdbfb3867bd500b9065fa
