[INFO] cloning repository https://github.com/tacomorphism/rustbook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tacomorphism/rustbook" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftacomorphism%2Frustbook", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftacomorphism%2Frustbook'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1d4f543ba860b7dc162869cdbb704d35b3e33f7
[INFO] checking tacomorphism/rustbook against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftacomorphism%2Frustbook" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tacomorphism/rustbook on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tacomorphism/rustbook
[INFO] finished tweaking git repo https://github.com/tacomorphism/rustbook
[INFO] tweaked toml for git repo https://github.com/tacomorphism/rustbook written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/tacomorphism/rustbook already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8afba659f0f1f3810a7a679bb2f5f9e3971a10d5ef597fd2788aface594dd658
[INFO] running `Command { std: "docker" "start" "-a" "8afba659f0f1f3810a7a679bb2f5f9e3971a10d5ef597fd2788aface594dd658", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8afba659f0f1f3810a7a679bb2f5f9e3971a10d5ef597fd2788aface594dd658", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8afba659f0f1f3810a7a679bb2f5f9e3971a10d5ef597fd2788aface594dd658", kill_on_drop: false }`
[INFO] [stdout] 8afba659f0f1f3810a7a679bb2f5f9e3971a10d5ef597fd2788aface594dd658
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f551859ac4b0b65522596fd4d75af6f1153d0cf91938cf6c3551e33d1373882
[INFO] running `Command { std: "docker" "start" "-a" "8f551859ac4b0b65522596fd4d75af6f1153d0cf91938cf6c3551e33d1373882", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking book v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> src/ch10.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn longest(x: &str, y: &str) -> &str {
[INFO] [stdout]   |                       ----     ----     ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout]   = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `x` or `y`
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |                   ++++    ~~~~~~~     ~~~~~~~     ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]  --> src/ch10.rs:2:41
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn longest(x: &str, y: &str) -> &str {
[INFO] [stdout]   |                       ----     ----     ^ expected named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout]   = help: this function's return type contains a borrowed value, but the signature does not say whether it is borrowed from `x` or `y`
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]   |
[INFO] [stdout] 2 |     pub fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
[INFO] [stdout]   |                   ++++    ~~~~~~~     ~~~~~~~     ~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `book` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8f551859ac4b0b65522596fd4d75af6f1153d0cf91938cf6c3551e33d1373882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f551859ac4b0b65522596fd4d75af6f1153d0cf91938cf6c3551e33d1373882", kill_on_drop: false }`
[INFO] [stdout] 8f551859ac4b0b65522596fd4d75af6f1153d0cf91938cf6c3551e33d1373882