[INFO] cloning repository https://github.com/gusfrehse/persar
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gusfrehse/persar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgusfrehse%2Fpersar", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgusfrehse%2Fpersar'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 631770ef61b03df156a788475eb571a9de751006
[INFO] testing gusfrehse/persar against try#ecabaf78506b7a4668d42dc20268c086b93f0fad for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgusfrehse%2Fpersar" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gusfrehse/persar on toolchain ecabaf78506b7a4668d42dc20268c086b93f0fad
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gusfrehse/persar
[INFO] finished tweaking git repo https://github.com/gusfrehse/persar
[INFO] tweaked toml for git repo https://github.com/gusfrehse/persar written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/gusfrehse/persar already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a5524b38ef002d3c2c6581e32ff347fd2deafe8b8dc1bb8c50a0a4977d5fdc2
[INFO] running `Command { std: "docker" "start" "-a" "9a5524b38ef002d3c2c6581e32ff347fd2deafe8b8dc1bb8c50a0a4977d5fdc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a5524b38ef002d3c2c6581e32ff347fd2deafe8b8dc1bb8c50a0a4977d5fdc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a5524b38ef002d3c2c6581e32ff347fd2deafe8b8dc1bb8c50a0a4977d5fdc2", kill_on_drop: false }`
[INFO] [stdout] 9a5524b38ef002d3c2c6581e32ff347fd2deafe8b8dc1bb8c50a0a4977d5fdc2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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" "+ecabaf78506b7a4668d42dc20268c086b93f0fad" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f063c96f1425980db18e78431829cedd92fff0de035a7b939b51e34a697f9ad8
[INFO] running `Command { std: "docker" "start" "-a" "f063c96f1425980db18e78431829cedd92fff0de035a7b939b51e34a697f9ad8", kill_on_drop: false }`
[INFO] [stderr]    Compiling persar v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected one of `:`, `@`, or `|`, found `;`
[INFO] [stdout]   --> src/parser.rs:21:35
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn seq<T, U>(f : Parser<T>, g ; Parser<U>) -> Parser<(T,U)>
[INFO] [stdout]    |                                   ^ expected one of `:`, `@`, or `|`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0615]: attempted to take value of method `len` on type `&str`
[INFO] [stdout]   --> src/parser.rs:14:10
[INFO] [stdout]    |
[INFO] [stdout] 14 |     if s.len == 0 {
[INFO] [stdout]    |          ^^^ method, not a field
[INFO] [stdout]    |
[INFO] [stdout] help: use parentheses to call the method
[INFO] [stdout]    |
[INFO] [stdout] 14 |     if s.len() == 0 {
[INFO] [stdout]    |             ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/parser.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 15 |     Some(())
[INFO] [stdout]    |          ^^ expected tuple, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note:  expected tuple `(String, ())`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/parser.rs:21:51
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub fn seq<T, U>(f : Parser<T>, g ; Parser<U>) -> Parser<(T,U)>
[INFO] [stdout]    |        ---                                        ^^^^^^^^^^^^^ expected fn pointer, found `()`
[INFO] [stdout]    |        |
[INFO] [stdout]    |        implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected fn pointer `for<'r> fn(&'r str) -> Option<(String, (T, U))>`
[INFO] [stdout]                found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0615.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `persar`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f063c96f1425980db18e78431829cedd92fff0de035a7b939b51e34a697f9ad8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f063c96f1425980db18e78431829cedd92fff0de035a7b939b51e34a697f9ad8", kill_on_drop: false }`
[INFO] [stdout] f063c96f1425980db18e78431829cedd92fff0de035a7b939b51e34a697f9ad8