[INFO] cloning repository https://github.com/rtexelm/rust_gradient_generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rtexelm/rust_gradient_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frtexelm%2Frust_gradient_generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frtexelm%2Frust_gradient_generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8498087208a375bc3094dc1675b6aacd10fa9ba6
[INFO] checking rtexelm/rust_gradient_generator against master#8c32e313cccf7df531e2d49ffb8227bb92304aee for pr-145608-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frtexelm%2Frust_gradient_generator" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rtexelm/rust_gradient_generator
[INFO] finished tweaking git repo https://github.com/rtexelm/rust_gradient_generator
[INFO] tweaked toml for git repo https://github.com/rtexelm/rust_gradient_generator written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rtexelm/rust_gradient_generator on toolchain 8c32e313cccf7df531e2d49ffb8227bb92304aee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rtexelm/rust_gradient_generator 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" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num_cpus v1.15.0
[INFO] [stderr]   Downloaded crossbeam-deque v0.8.3
[INFO] [stderr]   Downloaded weezl v0.1.7
[INFO] [stderr]   Downloaded hermit-abi v0.2.6
[INFO] [stderr]   Downloaded getrandom v0.2.10
[INFO] [stderr]   Downloaded num-iter v0.1.43
[INFO] [stderr]   Downloaded bytemuck v1.13.1
[INFO] [stderr]   Downloaded num-traits v0.2.15
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.15
[INFO] [stderr]   Downloaded rayon v1.7.0
[INFO] [stderr]   Downloaded rayon-core v1.11.0
[INFO] [stderr]   Downloaded either v1.8.1
[INFO] [stderr]   Downloaded memoffset v0.9.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.16
[INFO] [stderr]   Downloaded crossbeam-channel v0.5.8
[INFO] [stderr]   Downloaded libc v0.2.147
[INFO] [stderr]   Downloaded gif v0.11.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ad7ee108abd86c6188199c7744476042c219c72f7eb6c6b48469f3cd74915a2
[INFO] running `Command { std: "docker" "start" "-a" "4ad7ee108abd86c6188199c7744476042c219c72f7eb6c6b48469f3cd74915a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ad7ee108abd86c6188199c7744476042c219c72f7eb6c6b48469f3cd74915a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ad7ee108abd86c6188199c7744476042c219c72f7eb6c6b48469f3cd74915a2", kill_on_drop: false }`
[INFO] [stdout] 4ad7ee108abd86c6188199c7744476042c219c72f7eb6c6b48469f3cd74915a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+8c32e313cccf7df531e2d49ffb8227bb92304aee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f06647caa53671579aaebb661b02cb35b955adc69f797d01683e8a34e2fa952b
[INFO] running `Command { std: "docker" "start" "-a" "f06647caa53671579aaebb661b02cb35b955adc69f797d01683e8a34e2fa952b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking bytemuck v1.13.1
[INFO] [stderr]     Checking gif v0.11.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking rust_photo_editor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |   fn greet_and_display_photos() -> Vec<String> {
[INFO] [stdout]    |                                    ----------- expected `Vec<String>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 42 | /     for (i, photo) in photos.iter().enumerate() {
[INFO] [stdout] 43 | |         println!("{}: {}", i + 1, photo);
[INFO] [stdout] 44 | |         println!("=====================");
[INFO] [stdout] 45 | |     }
[INFO] [stdout]    | |_____^ expected `Vec<String>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Vec<String>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout]    = note: `for` loops evaluate to unit type `()`
[INFO] [stdout] help: consider returning a value here
[INFO] [stdout]    |
[INFO] [stdout] 45 ~     }
[INFO] [stdout] 46 +     /* `Vec<String>` value */
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |   fn greet_and_display_photos() -> Vec<String> {
[INFO] [stdout]    |                                    ----------- expected `Vec<String>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 42 | /     for (i, photo) in photos.iter().enumerate() {
[INFO] [stdout] 43 | |         println!("{}: {}", i + 1, photo);
[INFO] [stdout] 44 | |         println!("=====================");
[INFO] [stdout] 45 | |     }
[INFO] [stdout]    | |_____^ expected `Vec<String>`, found `()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected struct `Vec<String>`
[INFO] [stdout]            found unit type `()`
[INFO] [stdout]    = note: `for` loops evaluate to unit type `()`
[INFO] [stdout] help: consider returning a value here
[INFO] [stdout]    |
[INFO] [stdout] 45 ~     }
[INFO] [stdout] 46 +     /* `Vec<String>` value */
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_photo_editor` (bin "rust_photo_editor") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust_photo_editor` (bin "rust_photo_editor" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f06647caa53671579aaebb661b02cb35b955adc69f797d01683e8a34e2fa952b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f06647caa53671579aaebb661b02cb35b955adc69f797d01683e8a34e2fa952b", kill_on_drop: false }`
[INFO] [stdout] f06647caa53671579aaebb661b02cb35b955adc69f797d01683e8a34e2fa952b