[INFO] fetching crate incr 0.2.1...
[INFO] testing incr-0.2.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate incr 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate incr 0.2.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate incr 0.2.1
[INFO] finished tweaking crates.io crate incr 0.2.1
[INFO] tweaked toml for crates.io crate incr 0.2.1 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" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6738517037dea0e298e38b2171956e9bd59d6e8ac8963069b0f15a50eb4ccd30
[INFO] running `Command { std: "docker" "start" "-a" "6738517037dea0e298e38b2171956e9bd59d6e8ac8963069b0f15a50eb4ccd30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6738517037dea0e298e38b2171956e9bd59d6e8ac8963069b0f15a50eb4ccd30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6738517037dea0e298e38b2171956e9bd59d6e8ac8963069b0f15a50eb4ccd30", kill_on_drop: false }`
[INFO] [stdout] 6738517037dea0e298e38b2171956e9bd59d6e8ac8963069b0f15a50eb4ccd30
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b29c6251e16dfdf0e06a80c8e287ed761007b6f6405c1a0a835f1f0975af61f
[INFO] running `Command { std: "docker" "start" "-a" "5b29c6251e16dfdf0e06a80c8e287ed761007b6f6405c1a0a835f1f0975af61f", kill_on_drop: false }`
[INFO] [stderr]    Compiling incr v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:31:42
[INFO] [stdout]    |
[INFO] [stdout] 31 | #![cfg_attr(feature = "nightly", feature(test))]
[INFO] [stdout]    |                                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `incr` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "5b29c6251e16dfdf0e06a80c8e287ed761007b6f6405c1a0a835f1f0975af61f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b29c6251e16dfdf0e06a80c8e287ed761007b6f6405c1a0a835f1f0975af61f", kill_on_drop: false }`
[INFO] [stdout] 5b29c6251e16dfdf0e06a80c8e287ed761007b6f6405c1a0a835f1f0975af61f
[INFO] testing incr-0.2.1 against beta-2023-12-22 for beta-1.76-1
[INFO] extracting crate incr 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate incr 0.2.1 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate incr 0.2.1
[INFO] finished tweaking crates.io crate incr 0.2.1
[INFO] tweaked toml for crates.io crate incr 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e88a6255e2aa22e3b3a655f29a275bc43a884cd2ef7e64b5287b0bdac6da260
[INFO] running `Command { std: "docker" "start" "-a" "6e88a6255e2aa22e3b3a655f29a275bc43a884cd2ef7e64b5287b0bdac6da260", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e88a6255e2aa22e3b3a655f29a275bc43a884cd2ef7e64b5287b0bdac6da260", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e88a6255e2aa22e3b3a655f29a275bc43a884cd2ef7e64b5287b0bdac6da260", kill_on_drop: false }`
[INFO] [stdout] 6e88a6255e2aa22e3b3a655f29a275bc43a884cd2ef7e64b5287b0bdac6da260
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9d0432ecd8d5c9f6f260d1f6e33aa4a48413959c1b2cb6c5a416dbd5264ac22
[INFO] running `Command { std: "docker" "start" "-a" "d9d0432ecd8d5c9f6f260d1f6e33aa4a48413959c1b2cb6c5a416dbd5264ac22", kill_on_drop: false }`
[INFO] [stderr]    Compiling incr v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:31:42
[INFO] [stdout]    |
[INFO] [stdout] 31 | #![cfg_attr(feature = "nightly", feature(test))]
[INFO] [stdout]    |                                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `incr` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d9d0432ecd8d5c9f6f260d1f6e33aa4a48413959c1b2cb6c5a416dbd5264ac22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9d0432ecd8d5c9f6f260d1f6e33aa4a48413959c1b2cb6c5a416dbd5264ac22", kill_on_drop: false }`
[INFO] [stdout] d9d0432ecd8d5c9f6f260d1f6e33aa4a48413959c1b2cb6c5a416dbd5264ac22
