[INFO] fetching crate tyght-map 0.1.1...
[INFO] testing tyght-map-0.1.1 against 1.75.0 for beta-1.76-1
[INFO] extracting crate tyght-map 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate tyght-map 0.1.1 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 tyght-map 0.1.1
[INFO] finished tweaking crates.io crate tyght-map 0.1.1
[INFO] tweaked toml for crates.io crate tyght-map 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate tyght-map 0.1.1 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" "+1.75.0" "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] 23bfc70b26213f3198776c4fab60477ab2a0b3fe22206a3ace6d5f8ae5d746f4
[INFO] running `Command { std: "docker" "start" "-a" "23bfc70b26213f3198776c4fab60477ab2a0b3fe22206a3ace6d5f8ae5d746f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23bfc70b26213f3198776c4fab60477ab2a0b3fe22206a3ace6d5f8ae5d746f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23bfc70b26213f3198776c4fab60477ab2a0b3fe22206a3ace6d5f8ae5d746f4", kill_on_drop: false }`
[INFO] [stdout] 23bfc70b26213f3198776c4fab60477ab2a0b3fe22206a3ace6d5f8ae5d746f4
[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] a270fe9c2c7c83915d5e84f946c5a03d82e29f173625ef01859f608b4b098794
[INFO] running `Command { std: "docker" "start" "-a" "a270fe9c2c7c83915d5e84f946c5a03d82e29f173625ef01859f608b4b098794", kill_on_drop: false }`
[INFO] [stderr]    Compiling tyght-map v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | / #![feature(
[INFO] [stdout] 2 | |     generic_const_exprs,
[INFO] [stdout] 3 | |     core_intrinsics,
[INFO] [stdout] 4 | |     associated_const_equality,
[INFO] [stdout] 5 | |     const_type_id
[INFO] [stdout] 6 | | )]
[INFO] [stdout]   | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     core_intrinsics,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     const_type_id
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tyght-map` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "a270fe9c2c7c83915d5e84f946c5a03d82e29f173625ef01859f608b4b098794", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a270fe9c2c7c83915d5e84f946c5a03d82e29f173625ef01859f608b4b098794", kill_on_drop: false }`
[INFO] [stdout] a270fe9c2c7c83915d5e84f946c5a03d82e29f173625ef01859f608b4b098794
