[INFO] cloning repository https://github.com/xleyba/ex016
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xleyba/ex016" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxleyba%2Fex016", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxleyba%2Fex016'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 915d2c424edef12b566db6fdccb8cdf43455ea65
[INFO] checking xleyba/ex016 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxleyba%2Fex016" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/xleyba/ex016
[INFO] finished tweaking git repo https://github.com/xleyba/ex016
[INFO] tweaked toml for git repo https://github.com/xleyba/ex016 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/xleyba/ex016 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/xleyba/ex016 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 590533b0ed4aa012c5a109350106b7279357a936668654ccde4caf8825a59438
[INFO] running `Command { std: "docker" "start" "-a" "590533b0ed4aa012c5a109350106b7279357a936668654ccde4caf8825a59438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "590533b0ed4aa012c5a109350106b7279357a936668654ccde4caf8825a59438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "590533b0ed4aa012c5a109350106b7279357a936668654ccde4caf8825a59438", kill_on_drop: false }`
[INFO] [stdout] 590533b0ed4aa012c5a109350106b7279357a936668654ccde4caf8825a59438
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e5999dfdb877991b592ca91d52447ce28d0b704b8c5a5398f078c7e11e707bd
[INFO] running `Command { std: "docker" "start" "-a" "9e5999dfdb877991b592ca91d52447ce28d0b704b8c5a5398f078c7e11e707bd", kill_on_drop: false }`
[INFO] [stderr]     Checking ex016 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/main.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_last(self) -> Option<&usize> {
[INFO] [stdout]    |                                 ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_last(self) -> Option<&'static usize> {
[INFO] [stdout]    |                                  +++++++
[INFO] [stdout] help: instead, you are more likely to want to change the argument to be borrowed...
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_last(&self) -> Option<&usize> {
[INFO] [stdout]    |                 +
[INFO] [stdout] help: ...or alternatively, you might want to return an owned value
[INFO] [stdout]    |
[INFO] [stdout] 27 -     fn get_last(self) -> Option<&usize> {
[INFO] [stdout] 27 +     fn get_last(self) -> Option<usize> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |         if (self.cur_idx + 1 > self.size) {
[INFO] [stdout]    |            ^                            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 20 -         if (self.cur_idx + 1 > self.size) {
[INFO] [stdout] 20 +         if self.cur_idx + 1 > self.size {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/main.rs:27:33
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_last(self) -> Option<&usize> {
[INFO] [stdout]    |                                 ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: this function's return type contains a borrowed value, but there is no value for it to be borrowed from
[INFO] [stdout] help: consider using the `'static` lifetime, but this is uncommon unless you're returning a borrowed value from a `const` or a `static`
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_last(self) -> Option<&'static usize> {
[INFO] [stdout]    |                                  +++++++
[INFO] [stdout] help: instead, you are more likely to want to change the argument to be borrowed...
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_last(&self) -> Option<&usize> {
[INFO] [stdout]    |                 +
[INFO] [stdout] help: ...or alternatively, you might want to return an owned value
[INFO] [stdout]    |
[INFO] [stdout] 27 -     fn get_last(self) -> Option<&usize> {
[INFO] [stdout] 27 +     fn get_last(self) -> Option<usize> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ex016` (bin "ex016" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |         if (self.cur_idx + 1 > self.size) {
[INFO] [stdout]    |            ^                            ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 20 -         if (self.cur_idx + 1 > self.size) {
[INFO] [stdout] 20 +         if self.cur_idx + 1 > self.size {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ex016` (bin "ex016") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "9e5999dfdb877991b592ca91d52447ce28d0b704b8c5a5398f078c7e11e707bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e5999dfdb877991b592ca91d52447ce28d0b704b8c5a5398f078c7e11e707bd", kill_on_drop: false }`
[INFO] [stdout] 9e5999dfdb877991b592ca91d52447ce28d0b704b8c5a5398f078c7e11e707bd