[INFO] fetching crate acm 0.1.4...
[INFO] testing acm-0.1.4 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate acm 0.1.4 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate acm 0.1.4 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate acm 0.1.4
[INFO] finished tweaking crates.io crate acm 0.1.4
[INFO] tweaked toml for crates.io crate acm 0.1.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate acm 0.1.4 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" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded autocfg v1.0.1
[INFO] [stderr]   Downloaded proc-macro2 v0.4.30
[INFO] [stderr]   Downloaded rustc-demangle v0.1.14
[INFO] [stderr]   Downloaded backtrace v0.3.20
[INFO] [stderr]   Downloaded numtoa v0.1.0
[INFO] [stderr]   Downloaded redox_syscall v0.1.54
[INFO] [stderr]   Downloaded vec_map v0.8.1
[INFO] [stderr]   Downloaded redox_termios v0.1.1
[INFO] [stderr]   Downloaded atty v0.2.11
[INFO] [stderr]   Downloaded strsim v0.8.0
[INFO] [stderr]   Downloaded autocfg v0.1.4
[INFO] [stderr]   Downloaded ansi_term v0.11.0
[INFO] [stderr]   Downloaded synstructure v0.10.2
[INFO] [stderr]   Downloaded num-integer v0.1.44
[INFO] [stderr]   Downloaded termion v1.5.2
[INFO] [stderr]   Downloaded bitflags v1.0.4
[INFO] [stderr]   Downloaded syn v0.15.34
[INFO] [stderr]   Downloaded num-bigint v0.3.2
[INFO] [stderr]   Downloaded yaml-rust v0.3.5
[INFO] [stderr]   Downloaded clap v2.33.0
[INFO] [stderr]   Downloaded cc v1.0.37
[INFO] [stderr]   Downloaded failure v0.1.5
[INFO] [stderr]   Downloaded num-traits v0.2.14
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded quote v0.6.12
[INFO] [stderr]   Downloaded unicode-xid v0.1.0
[INFO] [stderr]   Downloaded libc v0.2.54
[INFO] [stderr]   Downloaded winapi v0.3.7
[INFO] [stderr]   Downloaded backtrace-sys v0.1.28
[INFO] [stderr]   Downloaded cfg-if v0.1.9
[INFO] [stderr]   Downloaded failure_derive v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fa3add3ba3af967f4013f7a42ae185c1e2cc10f1dad6bba83a19b37f11f3da9
[INFO] running `Command { std: "docker" "start" "-a" "9fa3add3ba3af967f4013f7a42ae185c1e2cc10f1dad6bba83a19b37f11f3da9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fa3add3ba3af967f4013f7a42ae185c1e2cc10f1dad6bba83a19b37f11f3da9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fa3add3ba3af967f4013f7a42ae185c1e2cc10f1dad6bba83a19b37f11f3da9", kill_on_drop: false }`
[INFO] [stdout] 9fa3add3ba3af967f4013f7a42ae185c1e2cc10f1dad6bba83a19b37f11f3da9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e028d9d88ab81dec8e45bbd17d15f97fb5920d012a8c4e5c840196a17fc4257d
[INFO] running `Command { std: "docker" "start" "-a" "e028d9d88ab81dec8e45bbd17d15f97fb5920d012a8c4e5c840196a17fc4257d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling rustc-demangle v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling backtrace v0.3.20
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling acm v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/acm.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/acm.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(step_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/acm.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(step_trait)]
[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 `acm` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "e028d9d88ab81dec8e45bbd17d15f97fb5920d012a8c4e5c840196a17fc4257d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e028d9d88ab81dec8e45bbd17d15f97fb5920d012a8c4e5c840196a17fc4257d", kill_on_drop: false }`
[INFO] [stdout] e028d9d88ab81dec8e45bbd17d15f97fb5920d012a8c4e5c840196a17fc4257d
