[INFO] updating cached repository https://github.com/tacomorphism/rustbook
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a1d4f543ba860b7dc162869cdbb704d35b3e33f7
[INFO] checking tacomorphism/rustbook against try#85cc1486e1f000dce4bb8e1b3cfab2b654b102a8 for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftacomorphism%2Frustbook" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tacomorphism/rustbook on toolchain 85cc1486e1f000dce4bb8e1b3cfab2b654b102a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "read-manifest" "--manifest-path" "Cargo.toml", 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-4/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" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b67766655e682fd06d5a56110964a5a8030eee9c9bbc3a9771892f577ee82806
[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" "b67766655e682fd06d5a56110964a5a8030eee9c9bbc3a9771892f577ee82806", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b67766655e682fd06d5a56110964a5a8030eee9c9bbc3a9771892f577ee82806", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b67766655e682fd06d5a56110964a5a8030eee9c9bbc3a9771892f577ee82806", kill_on_drop: false }`
[INFO] [stdout] b67766655e682fd06d5a56110964a5a8030eee9c9bbc3a9771892f577ee82806
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c6c28dccfd5dc6f72b441f5d942164d556a93aa51a55371e7a41f39a3848ecc
[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" "6c6c28dccfd5dc6f72b441f5d942164d556a93aa51a55371e7a41f39a3848ecc", 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] [stderr] error: could not compile `book`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[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[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6c6c28dccfd5dc6f72b441f5d942164d556a93aa51a55371e7a41f39a3848ecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c6c28dccfd5dc6f72b441f5d942164d556a93aa51a55371e7a41f39a3848ecc", kill_on_drop: false }`
[INFO] [stdout] 6c6c28dccfd5dc6f72b441f5d942164d556a93aa51a55371e7a41f39a3848ecc