[INFO] cloning repository https://github.com/DefectingCat/rs-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DefectingCat/rs-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDefectingCat%2Frs-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDefectingCat%2Frs-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f1064a7360526288b73f5af94740c77f72ea82dc
[INFO] testing DefectingCat/rs-playground against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDefectingCat%2Frs-playground" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/DefectingCat/rs-playground
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/DefectingCat/rs-playground
[INFO] tweaked toml for git repo https://github.com/DefectingCat/rs-playground written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/DefectingCat/rs-playground on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/DefectingCat/rs-playground 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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e60d0308ec551dcd2097026313cbcb63ae71f782f1e9e6060b245601a4b4dd5
[INFO] running `Command { std: "docker" "start" "-a" "5e60d0308ec551dcd2097026313cbcb63ae71f782f1e9e6060b245601a4b4dd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e60d0308ec551dcd2097026313cbcb63ae71f782f1e9e6060b245601a4b4dd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e60d0308ec551dcd2097026313cbcb63ae71f782f1e9e6060b245601a4b4dd5", kill_on_drop: false }`
[INFO] [stdout] 5e60d0308ec551dcd2097026313cbcb63ae71f782f1e9e6060b245601a4b4dd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e783e9f38d8468f648a169f3ae602370fb457f102d5e94c5317aa7302ab2d17d
[INFO] running `Command { std: "docker" "start" "-a" "e783e9f38d8468f648a169f3ae602370fb457f102d5e94c5317aa7302ab2d17d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling tracing-core v0.1.32
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]    Compiling http-body v1.0.1
[INFO] [stderr]    Compiling serde v1.0.208
[INFO] [stderr]    Compiling unicode-normalization v0.1.23
[INFO] [stderr]    Compiling regex-syntax v0.8.3
[INFO] [stderr]    Compiling ryu v1.0.17
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling socket2 v0.5.6
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling parking_lot v0.12.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.1
[INFO] [stderr]    Compiling syn v2.0.55
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling getrandom v0.2.12
[INFO] [stderr]    Compiling idna v0.5.0
[INFO] [stderr]    Compiling rustls-pki-types v1.8.0
[INFO] [stderr]    Compiling tokio-cron-scheduler v0.11.0
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling serde_json v1.0.125
[INFO] [stderr]    Compiling openssl-sys v0.9.101
[INFO] [stderr]    Compiling regex-automata v0.4.6
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rustls-pemfile v2.1.3
[INFO] [stderr]    Compiling openssl v0.10.64
[INFO] [stderr]    Compiling native-tls v0.2.11
[INFO] [stderr]    Compiling url v2.5.0
[INFO] [stderr]    Compiling uuid v1.8.0
[INFO] [stderr]    Compiling sharded-slab v0.1.7
[INFO] [stderr]    Compiling tracing-log v0.2.0
[INFO] [stderr]    Compiling chrono v0.4.37
[INFO] [stderr]    Compiling sync_wrapper v1.0.1
[INFO] [stderr]    Compiling thread_local v1.1.8
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling regex v1.10.4
[INFO] [stderr]    Compiling cron v0.12.1
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling pin-project-internal v1.1.5
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.208
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling tokio v1.39.3
[INFO] [stderr]    Compiling futures-util v0.3.30
[INFO] [stderr]    Compiling tracing v0.1.40
[INFO] [stderr]    Compiling pin-project v1.1.5
[INFO] [stderr]    Compiling tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling http-body-util v0.1.2
[INFO] [stderr]    Compiling futures-executor v0.3.30
[INFO] [stderr]    Compiling futures v0.3.30
[INFO] [stderr]    Compiling tokio-util v0.7.10
[INFO] [stderr]    Compiling tower v0.4.13
[INFO] [stderr]    Compiling tokio-native-tls v0.3.1
[INFO] [stderr]    Compiling tokio-stream v0.1.15
[INFO] [stderr]    Compiling serde_urlencoded v0.7.1
[INFO] [stderr]    Compiling h2 v0.4.6
[INFO] [stderr]    Compiling hyper v1.4.1
[INFO] [stderr]    Compiling hyper-util v0.1.7
[INFO] [stderr]    Compiling hyper-tls v0.6.0
[INFO] [stderr]    Compiling reqwest v0.12.7
[INFO] [stderr]    Compiling rs-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `Command { std: "docker" "inspect" "e783e9f38d8468f648a169f3ae602370fb457f102d5e94c5317aa7302ab2d17d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e783e9f38d8468f648a169f3ae602370fb457f102d5e94c5317aa7302ab2d17d", kill_on_drop: false }`
[INFO] [stdout] e783e9f38d8468f648a169f3ae602370fb457f102d5e94c5317aa7302ab2d17d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 77220f2438dfcca0fea3f9faedbd9d654476087e017ae2aa74de3dd70a8ba9df
[INFO] running `Command { std: "docker" "start" "-a" "77220f2438dfcca0fea3f9faedbd9d654476087e017ae2aa74de3dd70a8ba9df", kill_on_drop: false }`
[INFO] [stderr]    Compiling rs-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `EnvFilter`, `layer::SubscriberExt`, and `util::SubscriberInitExt`
[INFO] [stdout]  --> examples/tracing_test.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt, EnvFilter};
[INFO] [stdout]   |                          ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `test`
[INFO] [stdout]  --> examples/async_closure.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let test = || async { println!("async closure") };
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_test`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atest`
[INFO] [stdout]  --> examples/async_closure.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let atest = async || println!("async closure");
[INFO] [stdout]   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_atest`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> examples/simple_try.rs:7:33
[INFO] [stdout]    |
[INFO] [stdout]  7 |     simple_fold(arr.iter_mut(), total, |prev, cur| {
[INFO] [stdout]    |     -----------                 ^^^^^ expected `()`, found integer
[INFO] [stdout]    |     |
[INFO] [stdout]    |     arguments to this function are incorrect
[INFO] [stdout]    |
[INFO] [stdout] help: the return type of this call is `{integer}` due to the type of the argument passed
[INFO] [stdout]   --> examples/simple_try.rs:7:5
[INFO] [stdout]    |
[INFO] [stdout]  7 |       simple_fold(arr.iter_mut(), total, |prev, cur| {
[INFO] [stdout]    |       ^                           ----- this argument influences the return type of `simple_fold`
[INFO] [stdout]    |  _____|
[INFO] [stdout]    | |
[INFO] [stdout]  8 | |         dbg!(&prev, &cur);
[INFO] [stdout]  9 | |         // prev += cur;
[INFO] [stdout] 10 | |         prev
[INFO] [stdout] 11 | |     })
[INFO] [stdout]    | |______^
[INFO] [stdout] note: function defined here
[INFO] [stdout]   --> examples/simple_try.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn simple_fold<A, T>(
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 15 |     iter: impl Iterator<Item = T>,
[INFO] [stdout] 16 |     mut init: A,
[INFO] [stdout]    |     -----------
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rs-playground` (example "simple_try") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "77220f2438dfcca0fea3f9faedbd9d654476087e017ae2aa74de3dd70a8ba9df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77220f2438dfcca0fea3f9faedbd9d654476087e017ae2aa74de3dd70a8ba9df", kill_on_drop: false }`
[INFO] [stdout] 77220f2438dfcca0fea3f9faedbd9d654476087e017ae2aa74de3dd70a8ba9df
