[INFO] cloning repository https://github.com/ZachBaird/RustCrashCourse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZachBaird/RustCrashCourse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZachBaird%2FRustCrashCourse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZachBaird%2FRustCrashCourse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a3db95120a4ab338eb7ef9ac9b0d752046ab6ab6
[INFO] testing ZachBaird/RustCrashCourse against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZachBaird%2FRustCrashCourse" "/workspace/builds/worker-93/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-93/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZachBaird/RustCrashCourse on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZachBaird/RustCrashCourse
[INFO] finished tweaking git repo https://github.com/ZachBaird/RustCrashCourse
[INFO] tweaked toml for git repo https://github.com/ZachBaird/RustCrashCourse written to /workspace/builds/worker-93/source/Cargo.toml
[INFO] crate git repo https://github.com/ZachBaird/RustCrashCourse already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9c506844ef6c5cd1de473ecb96a9cd83d3710b14b5b3ab8d258cf318ac8359a
[INFO] running `Command { std: "docker" "start" "-a" "f9c506844ef6c5cd1de473ecb96a9cd83d3710b14b5b3ab8d258cf318ac8359a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9c506844ef6c5cd1de473ecb96a9cd83d3710b14b5b3ab8d258cf318ac8359a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9c506844ef6c5cd1de473ecb96a9cd83d3710b14b5b3ab8d258cf318ac8359a", kill_on_drop: false }`
[INFO] [stdout] f9c506844ef6c5cd1de473ecb96a9cd83d3710b14b5b3ab8d258cf318ac8359a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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" "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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c6dbd208772f186525f4569f599085b1f1c0e57010f1730273fbc6eae26e0f7d
[INFO] running `Command { std: "docker" "start" "-a" "c6dbd208772f186525f4569f599085b1f1c0e57010f1730273fbc6eae26e0f7d", kill_on_drop: false }`
[INFO] [stderr]    Compiling crash_course v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0596]: cannot borrow `p` as mutable, as it is not declared as mutable
[INFO] [stdout]   --> src/structs.rs:52:3
[INFO] [stdout]    |
[INFO] [stdout] 49 |   let p = Person::new("Zach", "Baird");
[INFO] [stdout]    |       - help: consider changing this to be mutable: `mut p`
[INFO] [stdout] ...
[INFO] [stdout] 52 |   p.set_last_name("Doe");
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^ cannot borrow as mutable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `crash_course` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c6dbd208772f186525f4569f599085b1f1c0e57010f1730273fbc6eae26e0f7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6dbd208772f186525f4569f599085b1f1c0e57010f1730273fbc6eae26e0f7d", kill_on_drop: false }`
[INFO] [stdout] c6dbd208772f186525f4569f599085b1f1c0e57010f1730273fbc6eae26e0f7d