[INFO] cloning repository https://github.com/ern4m/hanoi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ern4m/hanoi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fern4m%2Fhanoi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fern4m%2Fhanoi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f5e66c988a5f049f6b413918e01be0381d9f3066
[INFO] building ern4m/hanoi against master#70591dc15db32941fe3595fdbf98e58d6975f95e for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fern4m%2Fhanoi" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ern4m/hanoi on toolchain 70591dc15db32941fe3595fdbf98e58d6975f95e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ern4m/hanoi
[INFO] finished tweaking git repo https://github.com/ern4m/hanoi
[INFO] tweaked toml for git repo https://github.com/ern4m/hanoi written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ern4m/hanoi 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" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "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] building ern4m/hanoi against try#7587ff3622fbec0abf6ac551eab5226f22f5d958 for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fern4m%2Fhanoi" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ern4m/hanoi on toolchain 7587ff3622fbec0abf6ac551eab5226f22f5d958
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ern4m/hanoi
[INFO] finished tweaking git repo https://github.com/ern4m/hanoi
[INFO] tweaked toml for git repo https://github.com/ern4m/hanoi written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ern4m/hanoi 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" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "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] building ern4m/hanoi against try#7587ff3622fbec0abf6ac551eab5226f22f5d958 for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fern4m%2Fhanoi" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ern4m/hanoi on toolchain 7587ff3622fbec0abf6ac551eab5226f22f5d958
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ern4m/hanoi
[INFO] finished tweaking git repo https://github.com/ern4m/hanoi
[INFO] tweaked toml for git repo https://github.com/ern4m/hanoi written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/ern4m/hanoi 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" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 34a6581ca9dc6f5850f3b1fc2001b130c225820ce84e0ff989b331f4a54e262b
[INFO] running `Command { std: "docker" "start" "-a" "34a6581ca9dc6f5850f3b1fc2001b130c225820ce84e0ff989b331f4a54e262b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "34a6581ca9dc6f5850f3b1fc2001b130c225820ce84e0ff989b331f4a54e262b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34a6581ca9dc6f5850f3b1fc2001b130c225820ce84e0ff989b331f4a54e262b", kill_on_drop: false }`
[INFO] [stdout] 34a6581ca9dc6f5850f3b1fc2001b130c225820ce84e0ff989b331f4a54e262b
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+7587ff3622fbec0abf6ac551eab5226f22f5d958" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45982de1ec4fe31d23a8e250c95cc429d70b5f81110e241d3f7ed14eb919bebd
[INFO] running `Command { std: "docker" "start" "-a" "45982de1ec4fe31d23a8e250c95cc429d70b5f81110e241d3f7ed14eb919bebd", kill_on_drop: false }`
[INFO] [stderr]    Compiling hanoi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: lifetime in trait object type must be followed by `+`
[INFO] [stdout]   --> src/main.rs:45:10
[INFO] [stdout]    |
[INFO] [stdout] 45 |     a: &<'a> mut Stack,
[INFO] [stdout]    |          ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected `::`, found keyword `mut`
[INFO] [stdout]   --> src/main.rs:45:14
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Hanoi<'a> {
[INFO] [stdout]    |        ----- while parsing this struct
[INFO] [stdout] 45 |     a: &<'a> mut Stack,
[INFO] [stdout]    |              ^^^ expected `::`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0726]: implicit elided lifetime not allowed here
[INFO] [stdout]   --> src/main.rs:50:6
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl Hanoi {
[INFO] [stdout]    |      ^^^^^ expected lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] help: indicate the anonymous lifetime
[INFO] [stdout]    |
[INFO] [stdout] 50 | impl Hanoi<'_> {
[INFO] [stdout]    |           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `error::Error`
[INFO] [stdout]  --> src/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{error::Error, any::type_name};
[INFO] [stdout]   |           ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0392]: lifetime parameter `'a` is never used
[INFO] [stdout]   --> src/main.rs:44:14
[INFO] [stdout]    |
[INFO] [stdout] 44 | struct Hanoi<'a> {
[INFO] [stdout]    |              ^^ unused lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing `'a`, referring to it in a field, or using a marker such as `PhantomData`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0392, E0726.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0392`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hanoi` (bin "hanoi") due to 5 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "45982de1ec4fe31d23a8e250c95cc429d70b5f81110e241d3f7ed14eb919bebd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45982de1ec4fe31d23a8e250c95cc429d70b5f81110e241d3f7ed14eb919bebd", kill_on_drop: false }`
[INFO] [stdout] 45982de1ec4fe31d23a8e250c95cc429d70b5f81110e241d3f7ed14eb919bebd