[INFO] cloning repository https://github.com/kajstof/RustCrashCourse
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kajstof/RustCrashCourse" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkajstof%2FRustCrashCourse", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkajstof%2FRustCrashCourse'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7775f74297feea7b3aa5604e788118eb5717f33f
[INFO] checking kajstof/RustCrashCourse against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkajstof%2FRustCrashCourse" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kajstof/RustCrashCourse 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/kajstof/RustCrashCourse
[INFO] finished tweaking git repo https://github.com/kajstof/RustCrashCourse
[INFO] tweaked toml for git repo https://github.com/kajstof/RustCrashCourse written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kajstof/RustCrashCourse 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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fcadbb4637ee46f0dd3e802256b40fd13908648aa7bc73991257d035feb96cf
[INFO] running `Command { std: "docker" "start" "-a" "2fcadbb4637ee46f0dd3e802256b40fd13908648aa7bc73991257d035feb96cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fcadbb4637ee46f0dd3e802256b40fd13908648aa7bc73991257d035feb96cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fcadbb4637ee46f0dd3e802256b40fd13908648aa7bc73991257d035feb96cf", kill_on_drop: false }`
[INFO] [stdout] 2fcadbb4637ee46f0dd3e802256b40fd13908648aa7bc73991257d035feb96cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac49a6d77495677b64ae38edbe1c2ce4c89004d23a748613bfbbece629a25419
[INFO] running `Command { std: "docker" "start" "-a" "ac49a6d77495677b64ae38edbe1c2ce4c89004d23a748613bfbbece629a25419", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_crash_course v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0596]: cannot borrow `*vec2` as mutable, as it is behind a `&` reference
[INFO] [stdout]   --> src/pointer_ref.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     vec2.push(5);
[INFO] [stdout]    |     ^^^^ `vec2` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be a mutable reference
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut vec2 = &mut vec1;
[INFO] [stdout]    |                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `*vec2` as mutable, as it is behind a `&` reference
[INFO] [stdout]   --> src/pointer_ref.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     vec2.push(5);
[INFO] [stdout]    |     ^^^^ `vec2` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing this to be a mutable reference
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut vec2 = &mut vec1;
[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 E0596`.
[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 E0596`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_crash_course` (bin "rust_crash_course") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust_crash_course` (bin "rust_crash_course" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ac49a6d77495677b64ae38edbe1c2ce4c89004d23a748613bfbbece629a25419", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac49a6d77495677b64ae38edbe1c2ce4c89004d23a748613bfbbece629a25419", kill_on_drop: false }`
[INFO] [stdout] ac49a6d77495677b64ae38edbe1c2ce4c89004d23a748613bfbbece629a25419
[INFO] checking kajstof/RustCrashCourse against try#dae34b759e282c069aa28752564694effd121a63 for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkajstof%2FRustCrashCourse" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kajstof/RustCrashCourse 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/kajstof/RustCrashCourse
[INFO] finished tweaking git repo https://github.com/kajstof/RustCrashCourse
[INFO] tweaked toml for git repo https://github.com/kajstof/RustCrashCourse written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kajstof/RustCrashCourse 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f8222dee6849244857dd446e38ae20e264fb141134d872159ab611ca254269db
[INFO] running `Command { std: "docker" "start" "-a" "f8222dee6849244857dd446e38ae20e264fb141134d872159ab611ca254269db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f8222dee6849244857dd446e38ae20e264fb141134d872159ab611ca254269db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8222dee6849244857dd446e38ae20e264fb141134d872159ab611ca254269db", kill_on_drop: false }`
[INFO] [stdout] f8222dee6849244857dd446e38ae20e264fb141134d872159ab611ca254269db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+dae34b759e282c069aa28752564694effd121a63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 875a4d8ff5d1b9005e9d9f8ebc6335ca851ff69c85f6b41a87dcb0d1f8be9a61
[INFO] running `Command { std: "docker" "start" "-a" "875a4d8ff5d1b9005e9d9f8ebc6335ca851ff69c85f6b41a87dcb0d1f8be9a61", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] skipping non-2021 edition `2018`
[INFO] running `Command { std: "docker" "inspect" "875a4d8ff5d1b9005e9d9f8ebc6335ca851ff69c85f6b41a87dcb0d1f8be9a61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "875a4d8ff5d1b9005e9d9f8ebc6335ca851ff69c85f6b41a87dcb0d1f8be9a61", kill_on_drop: false }`
[INFO] [stdout] 875a4d8ff5d1b9005e9d9f8ebc6335ca851ff69c85f6b41a87dcb0d1f8be9a61