[INFO] cloning repository https://github.com/allan-silva/livro_tdd_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/allan-silva/livro_tdd_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fallan-silva%2Flivro_tdd_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fallan-silva%2Flivro_tdd_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 852cc63e69d291a0a2eab5431ff00a539f47064e
[INFO] testing allan-silva/livro_tdd_rust against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fallan-silva%2Flivro_tdd_rust" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/allan-silva/livro_tdd_rust on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/allan-silva/livro_tdd_rust
[INFO] finished tweaking git repo https://github.com/allan-silva/livro_tdd_rust
[INFO] tweaked toml for git repo https://github.com/allan-silva/livro_tdd_rust written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/allan-silva/livro_tdd_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd3c63695c87c70bf7f08df2f6dfdc2423a667395cd08bd32c8c6103a7124a91
[INFO] running `Command { std: "docker" "start" "-a" "fd3c63695c87c70bf7f08df2f6dfdc2423a667395cd08bd32c8c6103a7124a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd3c63695c87c70bf7f08df2f6dfdc2423a667395cd08bd32c8c6103a7124a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd3c63695c87c70bf7f08df2f6dfdc2423a667395cd08bd32c8c6103a7124a91", kill_on_drop: false }`
[INFO] [stdout] fd3c63695c87c70bf7f08df2f6dfdc2423a667395cd08bd32c8c6103a7124a91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a355dc2a2dc312dbecb32a4988311fc1ac48670e47349ee45ad5225a3b67646b
[INFO] running `Command { std: "docker" "start" "-a" "a355dc2a2dc312dbecb32a4988311fc1ac48670e47349ee45ad5225a3b67646b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling chrono v0.4.13
[INFO] [stderr]    Compiling livrotdd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(box_syntax)]
[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 `livrotdd` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a355dc2a2dc312dbecb32a4988311fc1ac48670e47349ee45ad5225a3b67646b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a355dc2a2dc312dbecb32a4988311fc1ac48670e47349ee45ad5225a3b67646b", kill_on_drop: false }`
[INFO] [stdout] a355dc2a2dc312dbecb32a4988311fc1ac48670e47349ee45ad5225a3b67646b