[INFO] cloning repository https://github.com/juan-fdz-hawa/learning_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/juan-fdz-hawa/learning_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuan-fdz-hawa%2Flearning_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuan-fdz-hawa%2Flearning_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] de56c8d59dad71761456c4e5d66d0bc5c700b4aa
[INFO] checking juan-fdz-hawa/learning_rust against try#a7b168ac4977e8e93a43448b44847adaa305d5a9 for pr-150557
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuan-fdz-hawa%2Flearning_rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/juan-fdz-hawa/learning_rust
[INFO] finished tweaking git repo https://github.com/juan-fdz-hawa/learning_rust
[INFO] tweaked toml for git repo https://github.com/juan-fdz-hawa/learning_rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/juan-fdz-hawa/learning_rust on toolchain a7b168ac4977e8e93a43448b44847adaa305d5a9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/juan-fdz-hawa/learning_rust 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" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8baa8fa4386e695fdf716290e46fa68d8879c0ccffb4f1264d8ec9d527c5fd42
[INFO] running `Command { std: "docker" "start" "-a" "8baa8fa4386e695fdf716290e46fa68d8879c0ccffb4f1264d8ec9d527c5fd42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8baa8fa4386e695fdf716290e46fa68d8879c0ccffb4f1264d8ec9d527c5fd42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8baa8fa4386e695fdf716290e46fa68d8879c0ccffb4f1264d8ec9d527c5fd42", kill_on_drop: false }`
[INFO] [stdout] 8baa8fa4386e695fdf716290e46fa68d8879c0ccffb4f1264d8ec9d527c5fd42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+a7b168ac4977e8e93a43448b44847adaa305d5a9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e19bf81a05431de95466546658af4904197f1b4c29b48729c2b97a79ad20411b
[INFO] running `Command { std: "docker" "start" "-a" "e19bf81a05431de95466546658af4904197f1b4c29b48729c2b97a79ad20411b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling libc v0.2.162
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking pin-project-lite v0.2.15
[INFO] [stderr]    Compiling serde v1.0.215
[INFO] [stderr]     Checking bytes v1.8.0
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]     Checking log v0.4.22
[INFO] [stderr]    Compiling cc v1.1.37
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling openssl v0.10.68
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]     Checking hashbrown v0.15.1
[INFO] [stderr]     Checking litemap v0.7.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]    Compiling anyhow v1.0.93
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]     Checking allocator-api2 v0.2.20
[INFO] [stderr]    Compiling form_urlencoded v1.2.1
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]     Checking indexmap v2.6.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]    Compiling syn v2.0.87
[INFO] [stderr]     Checking socket2 v0.5.7
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]     Checking mio v1.0.2
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling cpufeatures v0.2.15
[INFO] [stderr]    Compiling unicode_categories v0.1.1
[INFO] [stderr]    Compiling rustix v0.38.40
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling hashlink v0.9.1
[INFO] [stderr]    Compiling event-listener v5.3.1
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]    Compiling tokio v1.41.1
[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.11
[INFO] [stderr]    Compiling futures-intrusive v0.5.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling fastrand v2.2.0
[INFO] [stderr]    Compiling openssl-sys v0.9.104
[INFO] [stderr]    Compiling libsqlite3-sys v0.30.1
[INFO] [stderr]    Compiling flume v0.11.1
[INFO] [stderr]     Checking sqlformat v0.2.6
[INFO] [stderr]     Checking anstream v0.6.18
[INFO] [stderr]    Compiling thiserror v2.0.3
[INFO] [stderr]     Checking sync_wrapper v0.1.2
[INFO] [stderr]     Checking rustls-pki-types v1.10.0
[INFO] [stderr]     Checking clap_lex v0.7.2
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking thread_local v1.1.8
[INFO] [stderr]     Checking ipnet v2.10.1
[INFO] [stderr]     Checking clap_builder v4.5.20
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]     Checking dotenv v0.15.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking rwlocks v0.1.0 (/opt/rustwide/workdir/session_2/rwlocks)
[INFO] [stderr]     Checking variables v0.1.0 (/opt/rustwide/workdir/session_1/variables)
[INFO] [stderr]     Checking hello_thread v0.1.0 (/opt/rustwide/workdir/session_2/hello_thread)
[INFO] [stderr]     Checking dashing v0.1.0 (/opt/rustwide/workdir/session_2/dashing)
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]  --> session_1/variables/src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let m = 5;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n` is assigned to, but never used
[INFO] [stdout]   --> session_1/variables/src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut n = 5;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n` is never read
[INFO] [stdout]   --> session_1/variables/src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     n += 1;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]     Checking learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking memory_semantics v0.1.0 (/opt/rustwide/workdir/session_1/memory_semantics)
[INFO] [stderr]     Checking divide_work v0.1.0 (/opt/rustwide/workdir/session_2/divide_work)
[INFO] [stderr]     Checking mutexes v0.1.0 (/opt/rustwide/workdir/session_2/mutexes)
[INFO] [stderr]     Checking channels1 v0.1.0 (/opt/rustwide/workdir/session_2/channels1)
[INFO] [stderr]     Checking atomic v0.1.0 (/opt/rustwide/workdir/session_2/atomic)
[INFO] [stderr]     Checking deadlock v0.1.0 (/opt/rustwide/workdir/session_2/deadlock)
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]  --> session_2/deadlock/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]   --> session_2/deadlock/src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]   --> session_2/deadlock/src/main.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking text_input v0.1.0 (/opt/rustwide/workdir/session_1/text_input)
[INFO] [stderr]     Checking thread_builder v0.1.0 (/opt/rustwide/workdir/session_2/thread_builder)
[INFO] [stderr]     Checking scoped_threads v0.1.0 (/opt/rustwide/workdir/session_2/scoped_threads)
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]   --> session_2/thread_builder/src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let handler = thread::Builder::new()
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]  --> session_2/deadlock/src/main.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]   |         ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]   --> session_2/deadlock/src/main.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lock`
[INFO] [stdout]   --> session_2/deadlock/src/main.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 |         let lock = MY_SHARED.lock().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_lock`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `m`
[INFO] [stdout]  --> session_1/variables/src/main.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let m = 5;
[INFO] [stdout]   |         ^ help: if this is intentional, prefix it with an underscore: `_m`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `n` is assigned to, but never used
[INFO] [stdout]   --> session_1/variables/src/main.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut n = 5;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_n` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `n` is never read
[INFO] [stdout]   --> session_1/variables/src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     n += 1;
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir/session_1/hello_world)
[INFO] [stdout] warning: unused variable: `handler`
[INFO] [stdout]   --> session_2/thread_builder/src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let handler = thread::Builder::new()
[INFO] [stdout]    |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_handler`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tempfile v3.14.0
[INFO] [stderr] error: could not compile `futures-util` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/a7b168ac4977e8e93a43448b44847adaa305d5a9/bin/rustc --crate-name futures_util --edition=2018 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/futures-util-0.3.31/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no --warn=unreachable_pub --warn=unexpected_cfgs --warn=single_use_lifetimes --warn=rust_2018_idioms --warn=missing_debug_implementations --check-cfg 'cfg(futures_sanitizer)' --cfg 'feature="alloc"' --cfg 'feature="futures-io"' --cfg 'feature="futures-sink"' --cfg 'feature="io"' --cfg 'feature="memchr"' --cfg 'feature="sink"' --cfg 'feature="slab"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("alloc", "async-await", "async-await-macro", "bilock", "cfg-target-has-atomic", "channel", "compat", "default", "futures-channel", "futures-io", "futures-macro", "futures-sink", "futures_01", "io", "io-compat", "memchr", "portable-atomic", "sink", "slab", "std", "tokio-io", "unstable", "write-all-vectored"))' -C metadata=861cde7e6d8010bf -C extra-filename=-3130dedf8430a295 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-8bb7a06892b41e67.rmeta --extern futures_io=/opt/rustwide/target/debug/deps/libfutures_io-20e452c883531448.rmeta --extern futures_sink=/opt/rustwide/target/debug/deps/libfutures_sink-26fb45e17926c80e.rmeta --extern futures_task=/opt/rustwide/target/debug/deps/libfutures_task-3c3f30b429261b4e.rmeta --extern memchr=/opt/rustwide/target/debug/deps/libmemchr-371cdb7d366b303a.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-5124f05a105e83a8.rmeta --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-98755945da2574f7.rmeta --extern slab=/opt/rustwide/target/debug/deps/libslab-b1dc7dcc59a852cc.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e19bf81a05431de95466546658af4904197f1b4c29b48729c2b97a79ad20411b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e19bf81a05431de95466546658af4904197f1b4c29b48729c2b97a79ad20411b", kill_on_drop: false }`
[INFO] [stdout] e19bf81a05431de95466546658af4904197f1b4c29b48729c2b97a79ad20411b
