[INFO] cloning repository https://github.com/shika-blyat/math-eval2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shika-blyat/math-eval2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshika-blyat%2Fmath-eval2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshika-blyat%2Fmath-eval2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 85cacc8fad3d2d5db9a222900e6d0df04a6f8dd9
[INFO] testing shika-blyat/math-eval2 against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshika-blyat%2Fmath-eval2" "/workspace/builds/worker-80/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-80/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/shika-blyat/math-eval2 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/shika-blyat/math-eval2
[INFO] finished tweaking git repo https://github.com/shika-blyat/math-eval2
[INFO] tweaked toml for git repo https://github.com/shika-blyat/math-eval2 written to /workspace/builds/worker-80/source/Cargo.toml
[INFO] crate git repo https://github.com/shika-blyat/math-eval2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49d84cae260c1f78786e4533be79fa621ce6f576c8af7f2649483dfa6bd9458c
[INFO] running `Command { std: "docker" "start" "-a" "49d84cae260c1f78786e4533be79fa621ce6f576c8af7f2649483dfa6bd9458c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49d84cae260c1f78786e4533be79fa621ce6f576c8af7f2649483dfa6bd9458c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49d84cae260c1f78786e4533be79fa621ce6f576c8af7f2649483dfa6bd9458c", kill_on_drop: false }`
[INFO] [stdout] 49d84cae260c1f78786e4533be79fa621ce6f576c8af7f2649483dfa6bd9458c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 005137c0bda7166c09b879047e14eba93946bebdc77356a3407b2eb4713c807e
[INFO] running `Command { std: "docker" "start" "-a" "005137c0bda7166c09b879047e14eba93946bebdc77356a3407b2eb4713c807e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling math-interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(int_error_matching)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(or_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `or_patterns` has been stable since 1.53.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no variant or associated item named `Overflow` found for enum `IntErrorKind` in the current scope
[INFO] [stdout]   --> src/lexer.rs:64:31
[INFO] [stdout]    |
[INFO] [stdout] 64 |                 IntErrorKind::Overflow => Err(Error {
[INFO] [stdout]    |                               ^^^^^^^^ variant or associated item not found in `IntErrorKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `math-interpreter`
[INFO] [stdout] error[E0599]: no variant or associated item named `Underflow` found for enum `IntErrorKind` in the current scope
[INFO] [stdout]   --> src/lexer.rs:70:31
[INFO] [stdout]    |
[INFO] [stdout] 70 |                 IntErrorKind::Underflow => Err(Error {
[INFO] [stdout]    |                               ^^^^^^^^^ variant or associated item not found in `IntErrorKind`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "005137c0bda7166c09b879047e14eba93946bebdc77356a3407b2eb4713c807e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "005137c0bda7166c09b879047e14eba93946bebdc77356a3407b2eb4713c807e", kill_on_drop: false }`
[INFO] [stdout] 005137c0bda7166c09b879047e14eba93946bebdc77356a3407b2eb4713c807e
