[INFO] cloning repository https://github.com/ranafge/rust_struct_with_lifetime
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ranafge/rust_struct_with_lifetime" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Frust_struct_with_lifetime", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Frust_struct_with_lifetime'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 40b4946092101d7309293ad32232c2e7e64469c8
[INFO] checking ranafge/rust_struct_with_lifetime against master#5257aee7dd163d21d32fa904578d4fb0f4c91b79 for pr-116494-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Frust_struct_with_lifetime" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ranafge/rust_struct_with_lifetime on toolchain 5257aee7dd163d21d32fa904578d4fb0f4c91b79
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5257aee7dd163d21d32fa904578d4fb0f4c91b79" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ranafge/rust_struct_with_lifetime
[INFO] finished tweaking git repo https://github.com/ranafge/rust_struct_with_lifetime
[INFO] tweaked toml for git repo https://github.com/ranafge/rust_struct_with_lifetime written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ranafge/rust_struct_with_lifetime 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" "+5257aee7dd163d21d32fa904578d4fb0f4c91b79" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking ranafge/rust_struct_with_lifetime against try#d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8 for pr-116494-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Frust_struct_with_lifetime" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ranafge/rust_struct_with_lifetime on toolchain d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ranafge/rust_struct_with_lifetime
[INFO] finished tweaking git repo https://github.com/ranafge/rust_struct_with_lifetime
[INFO] tweaked toml for git repo https://github.com/ranafge/rust_struct_with_lifetime written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ranafge/rust_struct_with_lifetime 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" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "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 ranafge/rust_struct_with_lifetime against try#d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8 for pr-116494-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Franafge%2Frust_struct_with_lifetime" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ranafge/rust_struct_with_lifetime on toolchain d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ranafge/rust_struct_with_lifetime
[INFO] finished tweaking git repo https://github.com/ranafge/rust_struct_with_lifetime
[INFO] tweaked toml for git repo https://github.com/ranafge/rust_struct_with_lifetime written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ranafge/rust_struct_with_lifetime 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" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8dd3569ad80e500e6c51d0dd45af512dc3c90ce8c1d6f6be699df4edbb69eb5
[INFO] running `Command { std: "docker" "start" "-a" "b8dd3569ad80e500e6c51d0dd45af512dc3c90ce8c1d6f6be699df4edbb69eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8dd3569ad80e500e6c51d0dd45af512dc3c90ce8c1d6f6be699df4edbb69eb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8dd3569ad80e500e6c51d0dd45af512dc3c90ce8c1d6f6be699df4edbb69eb5", kill_on_drop: false }`
[INFO] [stdout] b8dd3569ad80e500e6c51d0dd45af512dc3c90ce8c1d6f6be699df4edbb69eb5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d614ed876e31a5f3ad1d0fbf848fcdab3a29d1d8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7cc8c16e5e07628e2253e93b2bae6f55b5e596cb78814b2dddb58cddd9ff58e3
[INFO] running `Command { std: "docker" "start" "-a" "7cc8c16e5e07628e2253e93b2bae6f55b5e596cb78814b2dddb58cddd9ff58e3", kill_on_drop: false }`
[INFO] [stderr]     Checking crazy_lifetime v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Book` is never constructed
[INFO] [stdout]  --> src/lib.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Book {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Library` is never constructed
[INFO] [stdout]   --> src/lib.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Library<'a> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `add_book` is never used
[INFO] [stdout]   --> src/lib.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl<'a> Library<'a> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 16 |     fn add_book(&mut self, book: &'a Book) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `title` is never read
[INFO] [stdout]  --> src/lib.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | struct Book {
[INFO] [stdout]   |        ---- field in this struct
[INFO] [stdout] 9 |     title: String,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "7cc8c16e5e07628e2253e93b2bae6f55b5e596cb78814b2dddb58cddd9ff58e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cc8c16e5e07628e2253e93b2bae6f55b5e596cb78814b2dddb58cddd9ff58e3", kill_on_drop: false }`
[INFO] [stdout] 7cc8c16e5e07628e2253e93b2bae6f55b5e596cb78814b2dddb58cddd9ff58e3