[INFO] fetching crate tlnat 0.1.2...
[INFO] testing tlnat-0.1.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate tlnat 0.1.2 into /workspace/builds/worker-20/source
[INFO] validating manifest of crates.io crate tlnat 0.1.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-20/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9398ad55d7bcb29a34cada7de3a507eb4ba2b193baa3313ba0090ed5820e70e8
[INFO] running `Command { std: "docker" "start" "-a" "9398ad55d7bcb29a34cada7de3a507eb4ba2b193baa3313ba0090ed5820e70e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9398ad55d7bcb29a34cada7de3a507eb4ba2b193baa3313ba0090ed5820e70e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9398ad55d7bcb29a34cada7de3a507eb4ba2b193baa3313ba0090ed5820e70e8", kill_on_drop: false }`
[INFO] [stdout] 9398ad55d7bcb29a34cada7de3a507eb4ba2b193baa3313ba0090ed5820e70e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55da64aae619851be3a8a2731b3df335dc0875be9e5536af43fe907329af3630
[INFO] running `Command { std: "docker" "start" "-a" "55da64aae619851be3a8a2731b3df335dc0875be9e5536af43fe907329af3630", 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] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | #![feature(associated_consts)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `associated_consts` has been stable since 1.20.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(const_fn)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `integral_constant`
[INFO] [stdout]   --> src/lib.rs:26:14
[INFO] [stdout]    |
[INFO] [stdout] 26 | macro_rules! integral_constant {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tlnat` due to 4 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "55da64aae619851be3a8a2731b3df335dc0875be9e5536af43fe907329af3630", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55da64aae619851be3a8a2731b3df335dc0875be9e5536af43fe907329af3630", kill_on_drop: false }`
[INFO] [stdout] 55da64aae619851be3a8a2731b3df335dc0875be9e5536af43fe907329af3630