[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#63132bd615c9bf75e93af8405d00064212331708 for pr-153975
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjuan-fdz-hawa%2Flearning_rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-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-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/juan-fdz-hawa/learning_rust on toolchain 63132bd615c9bf75e93af8405d00064212331708
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "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" "+63132bd615c9bf75e93af8405d00064212331708" "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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ded7539cafff749529dab380a72c132309f2e05d9fafa72e9859b3c2f39b3067
[INFO] running `Command { std: "docker" "start" "-a" "ded7539cafff749529dab380a72c132309f2e05d9fafa72e9859b3c2f39b3067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ded7539cafff749529dab380a72c132309f2e05d9fafa72e9859b3c2f39b3067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ded7539cafff749529dab380a72c132309f2e05d9fafa72e9859b3c2f39b3067", kill_on_drop: false }`
[INFO] [stdout] ded7539cafff749529dab380a72c132309f2e05d9fafa72e9859b3c2f39b3067
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e0cc02528a33e8f080163a77b3087917c5fb10fa2faf6fe4a75d36e53adaa14
[INFO] running `Command { std: "docker" "start" "-a" "5e0cc02528a33e8f080163a77b3087917c5fb10fa2faf6fe4a75d36e53adaa14", 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]    Compiling serde v1.0.215
[INFO] [stderr]     Checking bytes v1.8.0
[INFO] [stderr]    Compiling serde_json v1.0.132
[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 stable_deref_trait v1.2.0
[INFO] [stderr]     Checking litemap v0.7.3
[INFO] [stderr]     Checking hashbrown v0.15.1
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling writeable v0.5.5
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling pin-project-lite v0.2.15
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling icu_locid_transform_data v1.5.0
[INFO] [stderr]    Compiling anyhow v1.0.93
[INFO] [stderr]    Compiling icu_properties_data v1.5.0
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling utf16_iter v1.0.5
[INFO] [stderr]    Compiling utf8_iter v1.0.4
[INFO] [stderr]    Compiling write16 v1.0.0
[INFO] [stderr]    Compiling icu_normalizer_data v1.5.0
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]     Checking allocator-api2 v0.2.20
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]     Checking http v1.1.0
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking indexmap v2.6.0
[INFO] [stderr]    Compiling concurrent-queue v2.5.0
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling rustix v0.38.40
[INFO] [stderr]     Checking signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]     Checking http-body v1.0.1
[INFO] [stderr]    Compiling openssl-sys v0.9.104
[INFO] [stderr]    Compiling libsqlite3-sys v0.30.1
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling openssl-probe v0.1.5
[INFO] [stderr]    Compiling cpufeatures v0.2.15
[INFO] [stderr]    Compiling syn v2.0.87
[INFO] [stderr]    Compiling event-listener v5.3.1
[INFO] [stderr]    Compiling tokio v1.41.1
[INFO] [stderr]    Compiling sqlformat v0.2.6
[INFO] [stderr]    Compiling futures-intrusive v0.5.0
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling atoi v2.0.0
[INFO] [stderr]    Compiling hashlink v0.9.1
[INFO] [stderr]    Compiling crossbeam-queue v0.3.11
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]     Checking sync_wrapper v1.0.1
[INFO] [stderr]    Compiling openssl v0.10.68
[INFO] [stderr]    Compiling native-tls v0.2.12
[INFO] [stderr]    Compiling flume v0.11.1
[INFO] [stderr]    Compiling fastrand v2.2.0
[INFO] [stderr]    Compiling rustversion v1.0.18
[INFO] [stderr]     Checking rustls-pki-types v1.10.0
[INFO] [stderr]    Compiling thiserror v2.0.3
[INFO] [stderr]     Checking clap_lex v0.7.2
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking rustls-pemfile v2.2.0
[INFO] [stderr]     Checking dashmap v6.1.0
[INFO] [stderr]     Checking clap_builder v4.5.20
[INFO] [stderr]     Checking rwlocks v0.1.0 (/opt/rustwide/workdir/session_2/rwlocks)
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking thread_builder v0.1.0 (/opt/rustwide/workdir/session_2/thread_builder)
[INFO] [stderr]     Checking atomic v0.1.0 (/opt/rustwide/workdir/session_2/atomic)
[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]     Checking channels1 v0.1.0 (/opt/rustwide/workdir/session_2/channels1)
[INFO] [stderr]     Checking hello_thread v0.1.0 (/opt/rustwide/workdir/session_2/hello_thread)
[INFO] [stderr]     Checking deadlock v0.1.0 (/opt/rustwide/workdir/session_2/deadlock)
[INFO] [stderr]     Checking variables v0.1.0 (/opt/rustwide/workdir/session_1/variables)
[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] [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] [stderr]     Checking text_input v0.1.0 (/opt/rustwide/workdir/session_1/text_input)
[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 dashing v0.1.0 (/opt/rustwide/workdir/session_2/dashing)
[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 scoped_threads v0.1.0 (/opt/rustwide/workdir/session_2/scoped_threads)
[INFO] [stderr]     Checking mutexes v0.1.0 (/opt/rustwide/workdir/session_2/mutexes)
[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 futures-executor v0.3.31
[INFO] [stderr]    Compiling tempfile v3.14.0
[INFO] [stderr]    Compiling synstructure v0.13.1
[INFO] [stderr]    Compiling zerovec-derive v0.10.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.215
[INFO] [stderr]    Compiling icu_provider_macros v1.5.0
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling zerofrom-derive v0.1.4
[INFO] [stderr]    Compiling yoke-derive v0.7.4
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling async-trait v0.1.83
[INFO] [stderr]    Compiling clap_derive v4.5.18
[INFO] [stderr]    Compiling thiserror-impl v2.0.3
[INFO] [stderr] error: could not compile `tokio` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/63132bd615c9bf75e93af8405d00064212331708/bin/rustc --crate-name tokio --edition=2021 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/tokio-1.41.1/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 --cfg 'feature="bytes"' --cfg 'feature="default"' --cfg 'feature="fs"' --cfg 'feature="io-util"' --cfg 'feature="libc"' --cfg 'feature="mio"' --cfg 'feature="net"' --cfg 'feature="rt"' --cfg 'feature="socket2"' --cfg 'feature="sync"' --cfg 'feature="time"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("bytes", "default", "fs", "full", "io-std", "io-util", "libc", "macros", "mio", "net", "parking_lot", "process", "rt", "rt-multi-thread", "signal", "signal-hook-registry", "socket2", "sync", "test-util", "time", "tokio-macros", "tracing", "windows-sys"))' -C metadata=f233c14058847621 -C extra-filename=-3d943862a87217db --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bytes=/opt/rustwide/target/debug/deps/libbytes-f1ba6bac00788823.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-b1d52470a6485d6d.rmeta --extern mio=/opt/rustwide/target/debug/deps/libmio-21b1af3bf690ef29.rmeta --extern pin_project_lite=/opt/rustwide/target/debug/deps/libpin_project_lite-5124f05a105e83a8.rmeta --extern socket2=/opt/rustwide/target/debug/deps/libsocket2-374e037555b8ee7f.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" "5e0cc02528a33e8f080163a77b3087917c5fb10fa2faf6fe4a75d36e53adaa14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e0cc02528a33e8f080163a77b3087917c5fb10fa2faf6fe4a75d36e53adaa14", kill_on_drop: false }`
[INFO] [stdout] 5e0cc02528a33e8f080163a77b3087917c5fb10fa2faf6fe4a75d36e53adaa14
