[INFO] cloning repository https://github.com/likeabbas/UMCG
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/likeabbas/UMCG" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flikeabbas%2FUMCG", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flikeabbas%2FUMCG'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d48d41d589e3c45db5d3d8d8cf003bd81deac6d
[INFO] checking likeabbas/UMCG against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flikeabbas%2FUMCG" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-1-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/likeabbas/UMCG
[INFO] finished tweaking git repo https://github.com/likeabbas/UMCG
[INFO] tweaked toml for git repo https://github.com/likeabbas/UMCG written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/likeabbas/UMCG on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/likeabbas/UMCG 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80e1aa027237ba1e1861ed9891c88fc20461fdaa9957b37dc87d9b1ff29068b0
[INFO] running `Command { std: "docker" "start" "-a" "80e1aa027237ba1e1861ed9891c88fc20461fdaa9957b37dc87d9b1ff29068b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80e1aa027237ba1e1861ed9891c88fc20461fdaa9957b37dc87d9b1ff29068b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80e1aa027237ba1e1861ed9891c88fc20461fdaa9957b37dc87d9b1ff29068b0", kill_on_drop: false }`
[INFO] [stdout] 80e1aa027237ba1e1861ed9891c88fc20461fdaa9957b37dc87d9b1ff29068b0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dunmustuse_in_always_ok" "-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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ec2295909fc3fcbb75612bec644c891e2a50019e829a97dec2d169919fae983
[INFO] running `Command { std: "docker" "start" "-a" "1ec2295909fc3fcbb75612bec644c891e2a50019e829a97dec2d169919fae983", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.164
[INFO] [stderr]    Compiling zerocopy v0.8.13
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling io-uring v0.7.2
[INFO] [stderr]     Checking miniz_oxide v0.8.2
[INFO] [stderr]     Checking chunked_transfer v1.5.0
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]     Checking crossbeam-deque v0.8.5
[INFO] [stderr]     Checking ascii v1.1.0
[INFO] [stderr]     Checking chrono v0.4.39
[INFO] [stderr]     Checking ringbuf v0.4.7
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking hpack v0.2.0
[INFO] [stderr]     Checking tiny_http v0.12.0
[INFO] [stderr]     Checking solicit v0.4.4
[INFO] [stderr]     Checking object v0.36.7
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking getrandom v0.3.0-rc.0
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]     Checking uuid v1.11.0
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]     Checking rand_core v0.9.0-beta.1
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.9.0-beta.1
[INFO] [stderr]     Checking rand v0.9.0-beta.1
[INFO] [stderr]     Checking UMCG v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/attempt2.rs:1880:43
[INFO] [stdout]      |
[INFO] [stdout] 1880 |         parent_task_handle.clone().submit("dynamic_parent_task".parse().unwrap(), Box::new(move || {
[INFO] [stdout]      |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/attempt2.rs:1892:39
[INFO] [stdout]      |
[INFO] [stdout] 1892 |             parent_task_handle.submit("dynamic_child_task".parse().unwrap(), Box::new(move || {
[INFO] [stdout]      |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/attempt2.rs:2080:28
[INFO] [stdout]      |
[INFO] [stdout] 2080 |         task_handle.submit("tcp_accept_task".parse().unwrap(), Box::new(move || {
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/attempt2.rs:2096:55
[INFO] [stdout]      |
[INFO] [stdout] 2096 |                         connection_task_handle.submit("connection_handle_task".parse().unwrap(), Box::new(move || {
[INFO] [stdout]      |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `UMCG` (lib test) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/attempt2.rs:1880:43
[INFO] [stdout]      |
[INFO] [stdout] 1880 |         parent_task_handle.clone().submit("dynamic_parent_task".parse().unwrap(), Box::new(move || {
[INFO] [stdout]      |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/attempt2.rs:1892:39
[INFO] [stdout]      |
[INFO] [stdout] 1892 |             parent_task_handle.submit("dynamic_child_task".parse().unwrap(), Box::new(move || {
[INFO] [stdout]      |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/attempt2.rs:2080:28
[INFO] [stdout]      |
[INFO] [stdout] 2080 |         task_handle.submit("tcp_accept_task".parse().unwrap(), Box::new(move || {
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]     --> src/attempt2.rs:2096:55
[INFO] [stdout]      |
[INFO] [stdout] 2096 |                         connection_task_handle.submit("connection_handle_task".parse().unwrap(), Box::new(move || {
[INFO] [stdout]      |                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `UMCG` (lib) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "1ec2295909fc3fcbb75612bec644c891e2a50019e829a97dec2d169919fae983", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ec2295909fc3fcbb75612bec644c891e2a50019e829a97dec2d169919fae983", kill_on_drop: false }`
[INFO] [stdout] 1ec2295909fc3fcbb75612bec644c891e2a50019e829a97dec2d169919fae983