[INFO] cloning repository https://github.com/JoshuaPostel/rust-book-hello
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JoshuaPostel/rust-book-hello" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshuaPostel%2Frust-book-hello", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshuaPostel%2Frust-book-hello'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7da319d05625958f4a890346362d7db0540ebbaf
[INFO] checking JoshuaPostel/rust-book-hello against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshuaPostel%2Frust-book-hello" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JoshuaPostel/rust-book-hello on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JoshuaPostel/rust-book-hello
[INFO] finished tweaking git repo https://github.com/JoshuaPostel/rust-book-hello
[INFO] tweaked toml for git repo https://github.com/JoshuaPostel/rust-book-hello written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JoshuaPostel/rust-book-hello 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" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ce80b962b92edcf183c3eb077a280e5da05e1bd561ada46688cc915330355e2
[INFO] running `Command { std: "docker" "start" "-a" "9ce80b962b92edcf183c3eb077a280e5da05e1bd561ada46688cc915330355e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ce80b962b92edcf183c3eb077a280e5da05e1bd561ada46688cc915330355e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ce80b962b92edcf183c3eb077a280e5da05e1bd561ada46688cc915330355e2", kill_on_drop: false }`
[INFO] [stdout] 9ce80b962b92edcf183c3eb077a280e5da05e1bd561ada46688cc915330355e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85fc200011b11cb8f1132797e13a53c504be076c2734b3618eacab6cb525cc33
[INFO] running `Command { std: "docker" "start" "-a" "85fc200011b11cb8f1132797e13a53c504be076c2734b3618eacab6cb525cc33", kill_on_drop: false }`
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `join` found for enum `Option` in the current scope
[INFO] [stdout]   --> src/lib.rs:60:27
[INFO] [stdout]    |
[INFO] [stdout] 60 |             worker.thread.join().unwrap();
[INFO] [stdout]    |                           ^^^^ method not found in `Option<JoinHandle<()>>`
[INFO] [stdout]    |
[INFO] [stdout] note: the method `join` exists on the type `JoinHandle<()>`
[INFO] [stdout]   --> /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/thread/mod.rs:1723:5
[INFO] [stdout] help: consider using `Option::expect` to unwrap the `JoinHandle<()>` value, panicking if the value is an `Option::None`
[INFO] [stdout]    |
[INFO] [stdout] 60 |             worker.thread.expect("REASON").join().unwrap();
[INFO] [stdout]    |                          +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `join` found for enum `Option` in the current scope
[INFO] [stdout]   --> src/lib.rs:60:27
[INFO] [stdout]    |
[INFO] [stdout] 60 |             worker.thread.join().unwrap();
[INFO] [stdout]    |                           ^^^^ method not found in `Option<JoinHandle<()>>`
[INFO] [stdout]    |
[INFO] [stdout] note: the method `join` exists on the type `JoinHandle<()>`
[INFO] [stdout]   --> /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/thread/mod.rs:1723:5
[INFO] [stdout] help: consider using `Option::expect` to unwrap the `JoinHandle<()>` value, panicking if the value is an `Option::None`
[INFO] [stdout]    |
[INFO] [stdout] 60 |             worker.thread.expect("REASON").join().unwrap();
[INFO] [stdout]    |                          +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hello` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `hello` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "85fc200011b11cb8f1132797e13a53c504be076c2734b3618eacab6cb525cc33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85fc200011b11cb8f1132797e13a53c504be076c2734b3618eacab6cb525cc33", kill_on_drop: false }`
[INFO] [stdout] 85fc200011b11cb8f1132797e13a53c504be076c2734b3618eacab6cb525cc33
[INFO] checking JoshuaPostel/rust-book-hello against try#dae34b759e282c069aa28752564694effd121a63 for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJoshuaPostel%2Frust-book-hello" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JoshuaPostel/rust-book-hello on toolchain dae34b759e282c069aa28752564694effd121a63
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JoshuaPostel/rust-book-hello
[INFO] finished tweaking git repo https://github.com/JoshuaPostel/rust-book-hello
[INFO] tweaked toml for git repo https://github.com/JoshuaPostel/rust-book-hello written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/JoshuaPostel/rust-book-hello 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" "+dae34b759e282c069aa28752564694effd121a63" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f741e46d8d627cccc2303b1166846e616619b8b75839cd4d31c0214ef3d9e008
[INFO] running `Command { std: "docker" "start" "-a" "f741e46d8d627cccc2303b1166846e616619b8b75839cd4d31c0214ef3d9e008", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f741e46d8d627cccc2303b1166846e616619b8b75839cd4d31c0214ef3d9e008", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f741e46d8d627cccc2303b1166846e616619b8b75839cd4d31c0214ef3d9e008", kill_on_drop: false }`
[INFO] [stdout] f741e46d8d627cccc2303b1166846e616619b8b75839cd4d31c0214ef3d9e008
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52cf28a962c86b884369bc9db38aa6144c6c6846b2521e1963aa088e585d0da2
[INFO] running `Command { std: "docker" "start" "-a" "52cf28a962c86b884369bc9db38aa6144c6c6846b2521e1963aa088e585d0da2", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "52cf28a962c86b884369bc9db38aa6144c6c6846b2521e1963aa088e585d0da2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52cf28a962c86b884369bc9db38aa6144c6c6846b2521e1963aa088e585d0da2", kill_on_drop: false }`
[INFO] [stdout] 52cf28a962c86b884369bc9db38aa6144c6c6846b2521e1963aa088e585d0da2