[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] testing kamalasaurus/boolean-query-parser against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkamalasaurus%2Fboolean-query-parser" "/workspace/builds/worker-44/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-44/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kamalasaurus/boolean-query-parser on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-44/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 553f791182508f052739b5bda6bfb54981b5f1af89ef4a10fb8e09484c1a4ca3
[INFO] running `Command { std: "docker" "start" "-a" "553f791182508f052739b5bda6bfb54981b5f1af89ef4a10fb8e09484c1a4ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "553f791182508f052739b5bda6bfb54981b5f1af89ef4a10fb8e09484c1a4ca3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "553f791182508f052739b5bda6bfb54981b5f1af89ef4a10fb8e09484c1a4ca3", kill_on_drop: false }`
[INFO] [stdout] 553f791182508f052739b5bda6bfb54981b5f1af89ef4a10fb8e09484c1a4ca3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff9c822f518e79d8aa51e0268235df533b109af71f1adde5366c77746397e944
[INFO] running `Command { std: "docker" "start" "-a" "ff9c822f518e79d8aa51e0268235df533b109af71f1adde5366c77746397e944", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling 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: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[E0131]: `main` function is not allowed to have generic parameters
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn main(source: &str) -> String {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0131, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0131`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `boolean-query-parser` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "ff9c822f518e79d8aa51e0268235df533b109af71f1adde5366c77746397e944", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff9c822f518e79d8aa51e0268235df533b109af71f1adde5366c77746397e944", kill_on_drop: false }`
[INFO] [stdout] ff9c822f518e79d8aa51e0268235df533b109af71f1adde5366c77746397e944