[INFO] cloning repository https://github.com/Afizullah/rustlings
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Afizullah/rustlings" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAfizullah%2Frustlings", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAfizullah%2Frustlings'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30d2d7bb7639965c03528ada24a86af0d53c7e68
[INFO] checking Afizullah/rustlings against try#22cc29ba5b459fb386c0406b9baf3a49eb0fba39 for pr-146095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAfizullah%2Frustlings" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Afizullah/rustlings
[INFO] finished tweaking git repo https://github.com/Afizullah/rustlings
[INFO] tweaked toml for git repo https://github.com/Afizullah/rustlings written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Afizullah/rustlings on toolchain 22cc29ba5b459fb386c0406b9baf3a49eb0fba39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a7334f79d1121a8da588b043d186503748538b879531d6095763ff439f88f34
[INFO] running `Command { std: "docker" "start" "-a" "0a7334f79d1121a8da588b043d186503748538b879531d6095763ff439f88f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a7334f79d1121a8da588b043d186503748538b879531d6095763ff439f88f34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a7334f79d1121a8da588b043d186503748538b879531d6095763ff439f88f34", kill_on_drop: false }`
[INFO] [stdout] 0a7334f79d1121a8da588b043d186503748538b879531d6095763ff439f88f34
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08f14cf86da99b785776e0728d2bb79a2d976fe8c6769d9928e7cb3c6caad206
[INFO] running `Command { std: "docker" "start" "-a" "08f14cf86da99b785776e0728d2bb79a2d976fe8c6769d9928e7cb3c6caad206", kill_on_drop: false }`
[INFO] [stderr]     Checking exercises v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> exercises/20_threads/threads2.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     println!("Jobs done: {}", todo!());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^-------^
[INFO] [stdout]    |     |                         |
[INFO] [stdout]    |     |                         any code following this expression is unreachable
[INFO] [stdout]    |     unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0594]: cannot assign to data in an `Arc`
[INFO] [stdout]   --> exercises/20_threads/threads2.rs:22:13
[INFO] [stdout]    |
[INFO] [stdout] 22 |             status_shared.jobs_done += 1;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot assign
[INFO] [stdout]    |
[INFO] [stdout]    = help: trait `DerefMut` is required to modify through a dereference, but it is not implemented for `Arc<JobStatus>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0594`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "threads2" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0277]: cannot divide `f64` by `usize`
[INFO] [stdout]  --> exercises/23_conversions/using_as.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 |     total / values.len()
[INFO] [stdout]   |           ^ no implementation for `f64 / usize`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `Div<usize>` is not implemented for `f64`
[INFO] [stdout] help: the following other types implement trait `Div<Rhs>`
[INFO] [stdout]  --> /rustc/22cc29ba5b459fb386c0406b9baf3a49eb0fba39/library/core/src/ops/arith.rs:513:8
[INFO] [stdout]   |
[INFO] [stdout]   = note: `f64` implements `Div`
[INFO] [stdout]  ::: /rustc/22cc29ba5b459fb386c0406b9baf3a49eb0fba39/library/core/src/ops/arith.rs:526:0
[INFO] [stdout]   |
[INFO] [stdout]   = note: in this macro invocation
[INFO] [stdout]  --> /rustc/22cc29ba5b459fb386c0406b9baf3a49eb0fba39/library/core/src/internal_macros.rs:22:8
[INFO] [stdout]   |
[INFO] [stdout]   = note: `&f64` implements `Div<f64>`
[INFO] [stdout]  ::: /rustc/22cc29ba5b459fb386c0406b9baf3a49eb0fba39/library/core/src/internal_macros.rs:33:8
[INFO] [stdout]   |
[INFO] [stdout]   = note: `f64` implements `Div<&f64>`
[INFO] [stdout]  ::: /rustc/22cc29ba5b459fb386c0406b9baf3a49eb0fba39/library/core/src/internal_macros.rs:44:8
[INFO] [stdout]   |
[INFO] [stdout]   = note: `&f64` implements `Div`
[INFO] [stdout]   = note: this error originates in the macro `div_impl_float` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exercises` (bin "using_as" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "08f14cf86da99b785776e0728d2bb79a2d976fe8c6769d9928e7cb3c6caad206", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f14cf86da99b785776e0728d2bb79a2d976fe8c6769d9928e7cb3c6caad206", kill_on_drop: false }`
[INFO] [stdout] 08f14cf86da99b785776e0728d2bb79a2d976fe8c6769d9928e7cb3c6caad206
