[INFO] cloning repository https://github.com/kurtbuilds/refself
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kurtbuilds/refself" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkurtbuilds%2Frefself", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkurtbuilds%2Frefself'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 44016419de1daca85a5db1e244e000e7595fda77
[INFO] testing kurtbuilds/refself against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkurtbuilds%2Frefself" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/kurtbuilds/refself
[INFO] finished tweaking git repo https://github.com/kurtbuilds/refself
[INFO] tweaked toml for git repo https://github.com/kurtbuilds/refself written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kurtbuilds/refself on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/kurtbuilds/refself 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41c9e0082144d08637b72be3bd936966e172378b0aedda22f95bd978251648e4
[INFO] running `Command { std: "docker" "start" "-a" "41c9e0082144d08637b72be3bd936966e172378b0aedda22f95bd978251648e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41c9e0082144d08637b72be3bd936966e172378b0aedda22f95bd978251648e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41c9e0082144d08637b72be3bd936966e172378b0aedda22f95bd978251648e4", kill_on_drop: false }`
[INFO] [stdout] 41c9e0082144d08637b72be3bd936966e172378b0aedda22f95bd978251648e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 512dea044c610640d334f2f07006d3e635cbfd386b74b1f8caa90ccbe24241a7
[INFO] running `Command { std: "docker" "start" "-a" "512dea044c610640d334f2f07006d3e635cbfd386b74b1f8caa90ccbe24241a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling refself v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0753]: expected outer doc comment
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | //! As long as the struct never gives out static references,
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: inner doc comments like this (starting with `//!` or `/*!`) can only appear before items
[INFO] [stdout] help: you might have meant to write a regular comment
[INFO] [stdout]   |
[INFO] [stdout] 7 - //! As long as the struct never gives out static references,
[INFO] [stdout] 7 + // As long as the struct never gives out static references,
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0753]: expected outer doc comment
[INFO] [stdout]  --> src/lib.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | //! and references always lives as long as `self`, then the transmute, and this struct,
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: inner doc comments like this (starting with `//!` or `/*!`) can only appear before items
[INFO] [stdout] help: you might have meant to write a regular comment
[INFO] [stdout]   |
[INFO] [stdout] 8 - //! and references always lives as long as `self`, then the transmute, and this struct,
[INFO] [stdout] 8 + // and references always lives as long as `self`, then the transmute, and this struct,
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0753]: expected outer doc comment
[INFO] [stdout]   --> src/lib.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  |   //! is perfectly safe.
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 10 | / impl Source {
[INFO] [stdout] 11 | |     pub fn new(content: String) -> Self {
[INFO] [stdout] 12 | |         let tokens = content.split_whitespace()
[INFO] [stdout] 13 | |             .map(|t| unsafe { std::mem::transmute(t) })
[INFO] [stdout] ...  |
[INFO] [stdout] 21 | | }
[INFO] [stdout]    | |_- the inner doc comment doesn't annotate this implementation
[INFO] [stdout]    |
[INFO] [stdout] help: to annotate the implementation, change the doc comment from inner to outer style
[INFO] [stdout]    |
[INFO] [stdout] 9  - //! is perfectly safe.
[INFO] [stdout] 9  + /// is perfectly safe.
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0753`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `refself` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "512dea044c610640d334f2f07006d3e635cbfd386b74b1f8caa90ccbe24241a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512dea044c610640d334f2f07006d3e635cbfd386b74b1f8caa90ccbe24241a7", kill_on_drop: false }`
[INFO] [stdout] 512dea044c610640d334f2f07006d3e635cbfd386b74b1f8caa90ccbe24241a7