[INFO] cloning repository https://github.com/kamalasaurus/boolean-query-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kamalasaurus/boolean-query-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamalasaurus%2Fboolean-query-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamalasaurus%2Fboolean-query-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1afe1cad4ef2c41b15c1050800cb5a0af8cff9d1
[INFO] checking kamalasaurus/boolean-query-parser against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamalasaurus%2Fboolean-query-parser" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kamalasaurus/boolean-query-parser on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kamalasaurus/boolean-query-parser
[INFO] finished tweaking git repo https://github.com/kamalasaurus/boolean-query-parser
[INFO] tweaked toml for git repo https://github.com/kamalasaurus/boolean-query-parser written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/kamalasaurus/boolean-query-parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d43a300f34f0667d51430191acd7cc37449c81d4e700183cd1daf74ed81df01
[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" "2d43a300f34f0667d51430191acd7cc37449c81d4e700183cd1daf74ed81df01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d43a300f34f0667d51430191acd7cc37449c81d4e700183cd1daf74ed81df01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d43a300f34f0667d51430191acd7cc37449c81d4e700183cd1daf74ed81df01", kill_on_drop: false }`
[INFO] [stdout] 2d43a300f34f0667d51430191acd7cc37449c81d4e700183cd1daf74ed81df01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--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] 6e80c32d8b8bfbe263c1b422a4d8ca77c9020507e8ca062cae237b7c5d2d0f8f
[INFO] running `Command { std: "docker" "start" "-a" "6e80c32d8b8bfbe263c1b422a4d8ca77c9020507e8ca062cae237b7c5d2d0f8f", kill_on_drop: false }`
[INFO] [stderr]     Checking boolean-query-parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/main.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main(source: &str) -> String {
[INFO] [stdout]   |    ----                  ^^^^^^ expected struct `String`, found `()`
[INFO] [stdout]   |    |
[INFO] [stdout]   |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> src/main.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main(source: &str) -> String {
[INFO] [stdout]   |    ----                  ^^^^^^ expected struct `String`, found `()`
[INFO] [stdout]   |    |
[INFO] [stdout]   |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn parse(source: &str) -> Vec<Token> {
[INFO] [stdout]    |    -----                  ^^^^^^^^^^ expected struct `Vec`, found `()`
[INFO] [stdout]    |    |
[INFO] [stdout]    |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Vec<Token>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `boolean-query-parser`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0277]: `main` has invalid return type `String`
[INFO] [stdout]  --> src/main.rs:1:26
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main(source: &str) -> String {
[INFO] [stdout]   |                          ^^^^^^ `main` can only return types that implement `Termination`
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider using `()`, or a `Result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn parse(source: &str) -> Vec<Token> {
[INFO] [stdout]    |    -----                  ^^^^^^^^^^ expected struct `Vec`, found `()`
[INFO] [stdout]    |    |
[INFO] [stdout]    |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Vec<Token>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0580]: `main` function has wrong type
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main(source: &str) -> String {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ incorrect number of function parameters
[INFO] [stdout]   |
[INFO] [stdout]   = note: expected fn pointer `fn() -> String`
[INFO] [stdout]              found fn pointer `for<'r> fn(&'r str) -> String`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0308, E0580.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6e80c32d8b8bfbe263c1b422a4d8ca77c9020507e8ca062cae237b7c5d2d0f8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e80c32d8b8bfbe263c1b422a4d8ca77c9020507e8ca062cae237b7c5d2d0f8f", kill_on_drop: false }`
[INFO] [stdout] 6e80c32d8b8bfbe263c1b422a4d8ca77c9020507e8ca062cae237b7c5d2d0f8f