[INFO] cloning repository https://github.com/luna7111/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/luna7111/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluna7111%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluna7111%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c074d36e717454207763b85167dba505993f108a
[INFO] testing luna7111/rustlings against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluna7111%2Frustlings" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/luna7111/rustlings
[INFO] finished tweaking git repo https://github.com/luna7111/rustlings
[INFO] tweaked toml for git repo https://github.com/luna7111/rustlings written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/luna7111/rustlings on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/luna7111/rustlings 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0278d26986f3393f8f6ef5009dc6932de9a41a4d17677222529793e0e0dbec2a
[INFO] running `Command { std: "docker" "start" "-a" "0278d26986f3393f8f6ef5009dc6932de9a41a4d17677222529793e0e0dbec2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0278d26986f3393f8f6ef5009dc6932de9a41a4d17677222529793e0e0dbec2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0278d26986f3393f8f6ef5009dc6932de9a41a4d17677222529793e0e0dbec2a", kill_on_drop: false }`
[INFO] [stdout] 0278d26986f3393f8f6ef5009dc6932de9a41a4d17677222529793e0e0dbec2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0720f34ff7e39424f6f506b3dca76f3a1089cd31ddcac2c5e74ee76906357c98
[INFO] running `Command { std: "docker" "start" "-a" "0720f34ff7e39424f6f506b3dca76f3a1089cd31ddcac2c5e74ee76906357c98", kill_on_drop: false }`
[INFO] [stderr]    Compiling exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `my_macro`
[INFO] [stdout]  --> exercises/21_macros/macros1.rs:1:14
[INFO] [stdout]   |
[INFO] [stdout] 1 | macro_rules! my_macro {
[INFO] [stdout]   |              ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0423]: expected function, found macro `my_macro`
[INFO] [stdout]  --> exercises/21_macros/macros1.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     my_macro();
[INFO] [stdout]   |     ^^^^^^^^ not a function
[INFO] [stdout]   |
[INFO] [stdout] help: use `!` to invoke the macro
[INFO] [stdout]   |
[INFO] [stdout] 9 |     my_macro!();
[INFO] [stdout]   |             +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]  --> exercises/18_iterators/iterators4.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn factorial(num: u64) -> u64 {
[INFO] [stdout]   |    ---------              ^^^ expected `u64`, found `()`
[INFO] [stdout]   |    |
[INFO] [stdout]   |    implicitly returns `()` as its body has no tail or `return` expression
[INFO] [stdout]   |
[INFO] [stdout] help: consider returning the local binding `num`
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn factorial(num: u64) -> u64 {
[INFO] [stdout] 2 ~     num
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0423`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "macros1") due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `exercises` (bin "iterators4") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "0720f34ff7e39424f6f506b3dca76f3a1089cd31ddcac2c5e74ee76906357c98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0720f34ff7e39424f6f506b3dca76f3a1089cd31ddcac2c5e74ee76906357c98", kill_on_drop: false }`
[INFO] [stdout] 0720f34ff7e39424f6f506b3dca76f3a1089cd31ddcac2c5e74ee76906357c98
