[INFO] cloning repository https://github.com/seanconnery13/rust_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/seanconnery13/rust_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanconnery13%2Frust_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanconnery13%2Frust_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fe721ee121584dcd35846055c412bdb634907192
[INFO] checking seanconnery13/rust_playground against try#cd420d8bda33494ba3cc45048d5f067484a32b94 for pr-140209-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fseanconnery13%2Frust_playground" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/seanconnery13/rust_playground on toolchain cd420d8bda33494ba3cc45048d5f067484a32b94
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cd420d8bda33494ba3cc45048d5f067484a32b94" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/seanconnery13/rust_playground
[INFO] finished tweaking git repo https://github.com/seanconnery13/rust_playground
[INFO] tweaked toml for git repo https://github.com/seanconnery13/rust_playground written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/seanconnery13/rust_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" "+cd420d8bda33494ba3cc45048d5f067484a32b94" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 35 packages to latest compatible versions
[INFO] [stderr]       Adding autocfg v1.4.0
[INFO] [stderr]       Adding bitflags v2.9.0
[INFO] [stderr]       Adding bytes v1.10.1
[INFO] [stderr]       Adding futures v0.3.31
[INFO] [stderr]       Adding futures-channel v0.3.31
[INFO] [stderr]       Adding futures-core v0.3.31
[INFO] [stderr]       Adding futures-executor v0.3.31
[INFO] [stderr]       Adding futures-io v0.3.31
[INFO] [stderr]       Adding futures-macro v0.3.31
[INFO] [stderr]       Adding futures-sink v0.3.31
[INFO] [stderr]       Adding futures-task v0.3.31
[INFO] [stderr]       Adding futures-util v0.3.31
[INFO] [stderr]       Adding getrandom v0.3.2
[INFO] [stderr]       Adding lock_api v0.4.12
[INFO] [stderr]       Adding mio v1.0.3
[INFO] [stderr]       Adding parking_lot v0.12.3
[INFO] [stderr]       Adding parking_lot_core v0.9.10
[INFO] [stderr]       Adding pin-utils v0.1.0
[INFO] [stderr]       Adding ppv-lite86 v0.2.21
[INFO] [stderr]       Adding r-efi v5.2.0
[INFO] [stderr]       Adding rand v0.9.1
[INFO] [stderr]       Adding rand_chacha v0.9.0
[INFO] [stderr]       Adding rand_core v0.9.3
[INFO] [stderr]       Adding redox_syscall v0.5.11
[INFO] [stderr]       Adding scopeguard v1.2.0
[INFO] [stderr]       Adding signal-hook-registry v1.4.5
[INFO] [stderr]       Adding slab v0.4.9
[INFO] [stderr]       Adding smallvec v1.15.0
[INFO] [stderr]       Adding socket2 v0.5.8 (available: v0.5.9)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1
[INFO] [stderr]       Adding wasi v0.14.2+wasi-0.2.4
[INFO] [stderr]       Adding windows-sys v0.52.0
[INFO] [stderr]       Adding wit-bindgen-rt v0.39.0
[INFO] [stderr]       Adding zerocopy v0.8.25
[INFO] [stderr]       Adding zerocopy-derive v0.8.25
[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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+cd420d8bda33494ba3cc45048d5f067484a32b94" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e5b835c72483df356333fba65b4bb9f5224f49aa57192a29610f84f586df9f1
[INFO] running `Command { std: "docker" "start" "-a" "2e5b835c72483df356333fba65b4bb9f5224f49aa57192a29610f84f586df9f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e5b835c72483df356333fba65b4bb9f5224f49aa57192a29610f84f586df9f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e5b835c72483df356333fba65b4bb9f5224f49aa57192a29610f84f586df9f1", kill_on_drop: false }`
[INFO] [stdout] 2e5b835c72483df356333fba65b4bb9f5224f49aa57192a29610f84f586df9f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+cd420d8bda33494ba3cc45048d5f067484a32b94" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6797c40b37d3f08cd14e96370bcffe6702bacccd5465f6d439a35a8bbc3f15d1
[INFO] running `Command { std: "docker" "start" "-a" "6797c40b37d3f08cd14e96370bcffe6702bacccd5465f6d439a35a8bbc3f15d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.170
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling getrandom v0.3.2
[INFO] [stderr]    Compiling zerocopy v0.8.25
[INFO] [stderr]     Checking pin-project-lite v0.2.16
[INFO] [stderr]     Checking futures-sink v0.3.31
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking futures-core v0.3.31
[INFO] [stderr]     Checking smallvec v1.15.0
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking futures-task v0.3.31
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-io v0.3.31
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking bytes v1.10.1
[INFO] [stderr]     Checking futures-channel v0.3.31
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]     Checking socket2 v0.5.8
[INFO] [stderr]     Checking signal-hook-registry v1.4.5
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking rand_core v0.9.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.21
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.1
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]     Checking tokio v1.43.0
[INFO] [stderr]     Checking futures-util v0.3.31
[INFO] [stderr]     Checking futures-executor v0.3.31
[INFO] [stderr]     Checking futures v0.3.31
[INFO] [stderr]     Checking rust_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/bin/simple_threads.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     for i in 1..50 {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_new_threads_without_join` is never used
[INFO] [stdout]   --> src/bin/simple_threads.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn create_new_threads_without_join() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]  --> src/bin/simple_threads.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     for i in 1..50 {
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_new_threads_without_join` is never used
[INFO] [stdout]   --> src/bin/simple_threads.rs:19:4
[INFO] [stdout]    |
[INFO] [stdout] 19 | fn create_new_threads_without_join() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::future::join`
[INFO] [stdout]  --> src/bin/async_block_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use futures::future::join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f2`
[INFO] [stdout]   --> src/bin/async_block_2.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let f2 = async {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_f2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures::future::join`
[INFO] [stdout]  --> src/bin/async_block_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use futures::future::join;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 0 that must be used
[INFO] [stdout]   --> src/bin/breakfast_with_tasks.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(coffee_mug_thread, coffee_thread, toast_thread);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 1 that must be used
[INFO] [stdout]   --> src/bin/breakfast_with_tasks.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(coffee_mug_thread, coffee_thread, toast_thread);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 2 that must be used
[INFO] [stdout]   --> src/bin/breakfast_with_tasks.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(coffee_mug_thread, coffee_thread, toast_thread);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f2`
[INFO] [stdout]   --> src/bin/async_block_2.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let f2 = async {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_f2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 0 that must be used
[INFO] [stdout]   --> src/bin/breakfast_with_tasks.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(coffee_mug_thread, coffee_thread, toast_thread);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 1 that must be used
[INFO] [stdout]   --> src/bin/breakfast_with_tasks.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(coffee_mug_thread, coffee_thread, toast_thread);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` in tuple element 2 that must be used
[INFO] [stdout]   --> src/bin/breakfast_with_tasks.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     tokio::join!(coffee_mug_thread, coffee_thread, toast_thread);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: this warning originates in the macro `$crate::join` which comes from the expansion of the macro `tokio::join` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.52s
[INFO] running `Command { std: "docker" "inspect" "6797c40b37d3f08cd14e96370bcffe6702bacccd5465f6d439a35a8bbc3f15d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6797c40b37d3f08cd14e96370bcffe6702bacccd5465f6d439a35a8bbc3f15d1", kill_on_drop: false }`
[INFO] [stdout] 6797c40b37d3f08cd14e96370bcffe6702bacccd5465f6d439a35a8bbc3f15d1