[INFO] cloning repository https://github.com/devphaseX/rust-learning-activities
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/devphaseX/rust-learning-activities" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdevphaseX%2Frust-learning-activities", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdevphaseX%2Frust-learning-activities'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3565c6ac527fbff951a3d457cba05d89b4e6dc6e
[INFO] testing devphaseX/rust-learning-activities against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdevphaseX%2Frust-learning-activities" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/devphaseX/rust-learning-activities
[INFO] finished tweaking git repo https://github.com/devphaseX/rust-learning-activities
[INFO] tweaked toml for git repo https://github.com/devphaseX/rust-learning-activities written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/devphaseX/rust-learning-activities on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/devphaseX/rust-learning-activities 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0852f24f7362e205d3788998f5dfc0423d122c73ffc67712fbcebb8b028311e
[INFO] running `Command { std: "docker" "start" "-a" "d0852f24f7362e205d3788998f5dfc0423d122c73ffc67712fbcebb8b028311e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0852f24f7362e205d3788998f5dfc0423d122c73ffc67712fbcebb8b028311e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0852f24f7362e205d3788998f5dfc0423d122c73ffc67712fbcebb8b028311e", kill_on_drop: false }`
[INFO] [stdout] d0852f24f7362e205d3788998f5dfc0423d122c73ffc67712fbcebb8b028311e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c476b926039bd25a517b660ffcd0cac2a3ef1946bf0e5b9487d2939849eb3d25
[INFO] running `Command { std: "docker" "start" "-a" "c476b926039bd25a517b660ffcd0cac2a3ef1946bf0e5b9487d2939849eb3d25", kill_on_drop: false }`
[INFO] [stderr]    Compiling activities v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Body` is never used
[INFO] [stdout]   --> src/bin/a30.rs:18:7
[INFO] [stdout]    |
[INFO] [stdout] 18 | trait Body {}
[INFO] [stdout]    |       ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Color` is never used
[INFO] [stdout]   --> src/bin/a30.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 | trait Color {}
[INFO] [stdout]    |       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `crossbeam_channel`
[INFO] [stdout]   --> src/bin/a41.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | use crossbeam_channel::{unbounded, Receiver, Sender};
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `crossbeam_channel`
[INFO] [stdout]    |
[INFO] [stdout]    = help: if you wanted to use a crate named `crossbeam_channel`, use `cargo add crossbeam_channel` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]   --> src/bin/a24.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let data = vec![1, 2, 3, 4, 5];
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clamp` is never used
[INFO] [stdout]   --> src/bin/a22.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn clamp(n: i32, lower: i32, upper: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `div` is never used
[INFO] [stdout]   --> src/bin/a22.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn div(a: i32, b: i32) -> Option<i32> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `concat` is never used
[INFO] [stdout]   --> src/bin/a22.rs:30:4
[INFO] [stdout]    |
[INFO] [stdout] 30 | fn concat(first: &str, second: &str) -> String {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `activities` (bin "a41") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c476b926039bd25a517b660ffcd0cac2a3ef1946bf0e5b9487d2939849eb3d25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c476b926039bd25a517b660ffcd0cac2a3ef1946bf0e5b9487d2939849eb3d25", kill_on_drop: false }`
[INFO] [stdout] c476b926039bd25a517b660ffcd0cac2a3ef1946bf0e5b9487d2939849eb3d25