[INFO] cloning repository https://github.com/PhotonQuantum/l-lang-parser-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/PhotonQuantum/l-lang-parser-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhotonQuantum%2Fl-lang-parser-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhotonQuantum%2Fl-lang-parser-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 828b04f0164a163345e876106e3a5c636bcf24a5
[INFO] testing PhotonQuantum/l-lang-parser-rs against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPhotonQuantum%2Fl-lang-parser-rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/PhotonQuantum/l-lang-parser-rs 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/PhotonQuantum/l-lang-parser-rs
[INFO] finished tweaking git repo https://github.com/PhotonQuantum/l-lang-parser-rs
[INFO] tweaked toml for git repo https://github.com/PhotonQuantum/l-lang-parser-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/PhotonQuantum/l-lang-parser-rs 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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] f2f063cbc83eab8f2e4738e3b6fbc2a8059a2ce7234849e8623d0c66abb1b55e
[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" "f2f063cbc83eab8f2e4738e3b6fbc2a8059a2ce7234849e8623d0c66abb1b55e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2f063cbc83eab8f2e4738e3b6fbc2a8059a2ce7234849e8623d0c66abb1b55e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2f063cbc83eab8f2e4738e3b6fbc2a8059a2ce7234849e8623d0c66abb1b55e", kill_on_drop: false }`
[INFO] [stdout] f2f063cbc83eab8f2e4738e3b6fbc2a8059a2ce7234849e8623d0c66abb1b55e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 02eff5a9c55221fb2b327b1ddfd6de45726be29df1eef58a614f2ead0f28aa0c
[INFO] running `Command { std: "docker" "start" "-a" "02eff5a9c55221fb2b327b1ddfd6de45726be29df1eef58a614f2ead0f28aa0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.50
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling thiserror v1.0.22
[INFO] [stderr]    Compiling which v4.0.2
[INFO] [stderr]    Compiling toy_lang_parser_rs 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(iterator_fold_self, box_syntax, box_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `fold_first` found for struct `Map` in the current scope
[INFO] [stdout]   --> src/transpiler/ast.rs:19:14
[INFO] [stdout]    |
[INFO] [stdout] 19 |             .fold_first(|x, y| format!("{}\n{}", x, y))
[INFO] [stdout]    |              ^^^^^^^^^^ method not found in `Map<std::slice::Iter<'_, ast::CoqStmt>, [closure@src/transpiler/ast.rs:18:18: 18:35]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `fold_first` found for struct `std::vec::IntoIter` in the current scope
[INFO] [stdout]   --> src/transpiler/ast.rs:69:22
[INFO] [stdout]    |
[INFO] [stdout] 69 |                     .fold_first(|x, y| format!("(app {} {})", x, y))
[INFO] [stdout]    |                      ^^^^^^^^^^ method not found in `std::vec::IntoIter<String>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `fold_first` found for struct `Map` in the current scope
[INFO] [stdout]    --> src/transpiler/ast.rs:118:14
[INFO] [stdout]     |
[INFO] [stdout] 118 |             .fold_first(|x, y| format!("{}; {}", x, y))
[INFO] [stdout]     |              ^^^^^^^^^^ method not found in `Map<std::vec::IntoIter<String>, [closure@src/transpiler/ast.rs:117:18: 117:42]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `fold_first` found for struct `Map` in the current scope
[INFO] [stdout]  --> src/transpiler/utils.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |         .fold_first(|x, y| format!("{}\n{}", x, y))
[INFO] [stdout]   |          ^^^^^^^^^^ method not found in `Map<std::str::Lines<'_>, [closure@src/transpiler/utils.rs:5:14: 5:36]>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[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] [stderr] error: could not compile `toy_lang_parser_rs`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "02eff5a9c55221fb2b327b1ddfd6de45726be29df1eef58a614f2ead0f28aa0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02eff5a9c55221fb2b327b1ddfd6de45726be29df1eef58a614f2ead0f28aa0c", kill_on_drop: false }`
[INFO] [stdout] 02eff5a9c55221fb2b327b1ddfd6de45726be29df1eef58a614f2ead0f28aa0c
