[INFO] cloning repository https://github.com/wyattgill9/elegant-fizzbuzz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wyattgill9/elegant-fizzbuzz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwyattgill9%2Felegant-fizzbuzz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwyattgill9%2Felegant-fizzbuzz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 08758c100706a2635ec88cca15d3936d1575f5e8
[INFO] checking wyattgill9/elegant-fizzbuzz against try#fa4dd1f19bfeb3fd235dc7f1406c42404436bef5 for pr-145108-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwyattgill9%2Felegant-fizzbuzz" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/wyattgill9/elegant-fizzbuzz
[INFO] finished tweaking git repo https://github.com/wyattgill9/elegant-fizzbuzz
[INFO] tweaked toml for git repo https://github.com/wyattgill9/elegant-fizzbuzz written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wyattgill9/elegant-fizzbuzz on toolchain fa4dd1f19bfeb3fd235dc7f1406c42404436bef5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wyattgill9/elegant-fizzbuzz 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" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 045e7edb5fc0bd41f912936c355781647edc2e67ef6e201b5a08931e15d5a30e
[INFO] running `Command { std: "docker" "start" "-a" "045e7edb5fc0bd41f912936c355781647edc2e67ef6e201b5a08931e15d5a30e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "045e7edb5fc0bd41f912936c355781647edc2e67ef6e201b5a08931e15d5a30e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "045e7edb5fc0bd41f912936c355781647edc2e67ef6e201b5a08931e15d5a30e", kill_on_drop: false }`
[INFO] [stdout] 045e7edb5fc0bd41f912936c355781647edc2e67ef6e201b5a08931e15d5a30e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+fa4dd1f19bfeb3fd235dc7f1406c42404436bef5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19cf6af7c00d1e55c90a2d4e8250392e73fc28f762e72c0a9c328e0fc5839970
[INFO] running `Command { std: "docker" "start" "-a" "19cf6af7c00d1e55c90a2d4e8250392e73fc28f762e72c0a9c328e0fc5839970", kill_on_drop: false }`
[INFO] [stderr]     Checking elegant-fizzbuzz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `or_else` found for struct `String` in the current scope
[INFO] [stdout]  --> src/main.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | /     rules.iter()
[INFO] [stdout] 3 | |         .filter(|(div, _)| n % div == 0)
[INFO] [stdout] 4 | |         .map(|(_, word)| *word)
[INFO] [stdout] 5 | |         .fold(String::new(), |acc, word| acc + word)
[INFO] [stdout] 6 | |         .or_else(|_| Some(n.to_string()))
[INFO] [stdout]   | |         -^^^^^^^ method not found in `String`
[INFO] [stdout]   | |_________|
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `or_else` found for struct `String` in the current scope
[INFO] [stdout]  --> src/main.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | /     rules.iter()
[INFO] [stdout] 3 | |         .filter(|(div, _)| n % div == 0)
[INFO] [stdout] 4 | |         .map(|(_, word)| *word)
[INFO] [stdout] 5 | |         .fold(String::new(), |acc, word| acc + word)
[INFO] [stdout] 6 | |         .or_else(|_| Some(n.to_string()))
[INFO] [stdout]   | |         -^^^^^^^ method not found in `String`
[INFO] [stdout]   | |_________|
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `elegant-fizzbuzz` (bin "elegant-fizzbuzz" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `elegant-fizzbuzz` (bin "elegant-fizzbuzz") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "19cf6af7c00d1e55c90a2d4e8250392e73fc28f762e72c0a9c328e0fc5839970", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19cf6af7c00d1e55c90a2d4e8250392e73fc28f762e72c0a9c328e0fc5839970", kill_on_drop: false }`
[INFO] [stdout] 19cf6af7c00d1e55c90a2d4e8250392e73fc28f762e72c0a9c328e0fc5839970