[INFO] cloning repository https://github.com/Weltraumschaf/minivm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Weltraumschaf/minivm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWeltraumschaf%2Fminivm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWeltraumschaf%2Fminivm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f6257253bbca9cc6ea5f83a3c6dca902dcd1d1f6
[INFO] testing Weltraumschaf/minivm against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWeltraumschaf%2Fminivm" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Weltraumschaf/minivm on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Weltraumschaf/minivm
[INFO] finished tweaking git repo https://github.com/Weltraumschaf/minivm
[INFO] tweaked toml for git repo https://github.com/Weltraumschaf/minivm written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/Weltraumschaf/minivm already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e7a3924507d2ffe3191ff4c53f7b27ecea5ee5548ce857406f5f6af46836263f
[INFO] running `Command { std: "docker" "start" "-a" "e7a3924507d2ffe3191ff4c53f7b27ecea5ee5548ce857406f5f6af46836263f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7a3924507d2ffe3191ff4c53f7b27ecea5ee5548ce857406f5f6af46836263f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a3924507d2ffe3191ff4c53f7b27ecea5ee5548ce857406f5f6af46836263f", kill_on_drop: false }`
[INFO] [stdout] e7a3924507d2ffe3191ff4c53f7b27ecea5ee5548ce857406f5f6af46836263f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ad5691577a6612946d5d64bbb5606f4cc46ac2c1969ed5322f07eacb0ff9cf4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7ad5691577a6612946d5d64bbb5606f4cc46ac2c1969ed5322f07eacb0ff9cf4", kill_on_drop: false }`
[INFO] [stderr]    Compiling quick-error v1.2.1
[INFO] [stderr]    Compiling termcolor v0.3.5
[INFO] [stderr]    Compiling clap v2.30.0
[INFO] [stderr]    Compiling humantime v1.1.0
[INFO] [stderr]    Compiling env_logger v0.5.4
[INFO] [stderr]    Compiling minivm v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/frontend/character_helper.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         (CharacterHelper::is_alphabetic(ch) || CharacterHelper::is_numeric(ch))
[INFO] [stdout]    |         ^                                                                     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 17 -         (CharacterHelper::is_alphabetic(ch) || CharacterHelper::is_numeric(ch))
[INFO] [stdout] 17 +         CharacterHelper::is_alphabetic(ch) || CharacterHelper::is_numeric(ch)
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_from)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(try_from)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `minivm` due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7ad5691577a6612946d5d64bbb5606f4cc46ac2c1969ed5322f07eacb0ff9cf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ad5691577a6612946d5d64bbb5606f4cc46ac2c1969ed5322f07eacb0ff9cf4", kill_on_drop: false }`
[INFO] [stdout] 7ad5691577a6612946d5d64bbb5606f4cc46ac2c1969ed5322f07eacb0ff9cf4