[INFO] cloning repository https://github.com/tmunongo/library-in-time
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tmunongo/library-in-time" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmunongo%2Flibrary-in-time", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmunongo%2Flibrary-in-time'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 084b7ca47898f72b288ddff628baa1c25771fbab
[INFO] checking tmunongo/library-in-time against try#9b8307bcb9d1de8ffc7e1c81c48efffdb24ee840 for pr-149518
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmunongo%2Flibrary-in-time" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tmunongo/library-in-time
[INFO] finished tweaking git repo https://github.com/tmunongo/library-in-time
[INFO] tweaked toml for git repo https://github.com/tmunongo/library-in-time written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tmunongo/library-in-time on toolchain 9b8307bcb9d1de8ffc7e1c81c48efffdb24ee840
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b8307bcb9d1de8ffc7e1c81c48efffdb24ee840" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tmunongo/library-in-time 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" "+9b8307bcb9d1de8ffc7e1c81c48efffdb24ee840" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking tmunongo/library-in-time against try#9b8307bcb9d1de8ffc7e1c81c48efffdb24ee840 for pr-149518
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftmunongo%2Flibrary-in-time" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tmunongo/library-in-time
[INFO] finished tweaking git repo https://github.com/tmunongo/library-in-time
[INFO] tweaked toml for git repo https://github.com/tmunongo/library-in-time written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tmunongo/library-in-time on toolchain 9b8307bcb9d1de8ffc7e1c81c48efffdb24ee840
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9b8307bcb9d1de8ffc7e1c81c48efffdb24ee840" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/tmunongo/library-in-time 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" "+9b8307bcb9d1de8ffc7e1c81c48efffdb24ee840" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+9b8307bcb9d1de8ffc7e1c81c48efffdb24ee840" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4cbd77c91a0ede8c1510e69b306ba645e7189f0a9db7b7a75633d301d6577c9d
[INFO] running `Command { std: "docker" "start" "-a" "4cbd77c91a0ede8c1510e69b306ba645e7189f0a9db7b7a75633d301d6577c9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cbd77c91a0ede8c1510e69b306ba645e7189f0a9db7b7a75633d301d6577c9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cbd77c91a0ede8c1510e69b306ba645e7189f0a9db7b7a75633d301d6577c9d", kill_on_drop: false }`
[INFO] [stdout] 4cbd77c91a0ede8c1510e69b306ba645e7189f0a9db7b7a75633d301d6577c9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+9b8307bcb9d1de8ffc7e1c81c48efffdb24ee840" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] edca0d9647d10abbf7f3b47e58fae83f35eaaa6459d6248bada36ca4919bd9b3
[INFO] running `Command { std: "docker" "start" "-a" "edca0d9647d10abbf7f3b47e58fae83f35eaaa6459d6248bada36ca4919bd9b3", kill_on_drop: false }`
[INFO] [stderr]     Checking library-in-time v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `get_timeline` is never used
[INFO] [stdout]  --> src/main.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait Temporal {
[INFO] [stdout]   |       -------- method in this trait
[INFO] [stdout] 6 |     fn get_timeline(&self) -> &Timeline;
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `return_at` is never used
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | trait Borrowable: Temporal {
[INFO] [stdout]    |       ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn return_at(&mut self, year: u32) -> Result<(), String>;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:122:27
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn get_book_by_author(&self, author: &str) -> &Book {
[INFO] [stdout]     |                           ^^^^^                   ^^^^^
[INFO] [stdout]     |                           |                       ||
[INFO] [stdout]     |                           |                       |the same lifetime is hidden here
[INFO] [stdout]     |                           |                       the same lifetime is elided here
[INFO] [stdout]     |                           the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn get_book_by_author(&self, author: &str) -> &Book<'_> {
[INFO] [stdout]     |                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_timeline` is never used
[INFO] [stdout]  --> src/main.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait Temporal {
[INFO] [stdout]   |       -------- method in this trait
[INFO] [stdout] 6 |     fn get_timeline(&self) -> &Timeline;
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `return_at` is never used
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 13 | trait Borrowable: Temporal {
[INFO] [stdout]    |       ---------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn return_at(&mut self, year: u32) -> Result<(), String>;
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/main.rs:122:27
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn get_book_by_author(&self, author: &str) -> &Book {
[INFO] [stdout]     |                           ^^^^^                   ^^^^^
[INFO] [stdout]     |                           |                       ||
[INFO] [stdout]     |                           |                       |the same lifetime is hidden here
[INFO] [stdout]     |                           |                       the same lifetime is elided here
[INFO] [stdout]     |                           the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn get_book_by_author(&self, author: &str) -> &Book<'_> {
[INFO] [stdout]     |                                                        ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "edca0d9647d10abbf7f3b47e58fae83f35eaaa6459d6248bada36ca4919bd9b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edca0d9647d10abbf7f3b47e58fae83f35eaaa6459d6248bada36ca4919bd9b3", kill_on_drop: false }`
[INFO] [stdout] edca0d9647d10abbf7f3b47e58fae83f35eaaa6459d6248bada36ca4919bd9b3
