[INFO] fetching crate tracing-allocations 0.1.0... [INFO] testing tracing-allocations-0.1.0 against beta-2025-09-21 for beta-1.91-3 [INFO] extracting crate tracing-allocations 0.1.0 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate tracing-allocations 0.1.0 [INFO] finished tweaking crates.io crate tracing-allocations 0.1.0 [INFO] tweaked toml for crates.io crate tracing-allocations 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate tracing-allocations 0.1.0 on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate tracing-allocations 0.1.0 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" "+beta-2025-09-21" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a17d43679060f8d0fa37c45dc35a34601c7b63e98c916c455461eaf32a18e53c [INFO] running `Command { std: "docker" "start" "-a" "a17d43679060f8d0fa37c45dc35a34601c7b63e98c916c455461eaf32a18e53c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a17d43679060f8d0fa37c45dc35a34601c7b63e98c916c455461eaf32a18e53c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a17d43679060f8d0fa37c45dc35a34601c7b63e98c916c455461eaf32a18e53c", kill_on_drop: false }` [INFO] [stdout] a17d43679060f8d0fa37c45dc35a34601c7b63e98c916c455461eaf32a18e53c [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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7e29c28284bd1d388775432630f3bfd91fcab01bbbf7f87708c3ff9186035fc7 [INFO] running `Command { std: "docker" "start" "-a" "7e29c28284bd1d388775432630f3bfd91fcab01bbbf7f87708c3ff9186035fc7", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.36 [INFO] [stderr] Compiling syn v1.0.86 [INFO] [stderr] Compiling pin-project-lite v0.2.8 [INFO] [stderr] Compiling tracing-core v0.1.22 [INFO] [stderr] Compiling quote v1.0.15 [INFO] [stderr] Compiling tracing-attributes v0.1.19 [INFO] [stderr] Compiling tracing v0.1.31 [INFO] [stderr] Compiling tracing-allocations v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:84:17 [INFO] [stdout] | [INFO] [stdout] 84 | drop(guard); [INFO] [stdout] | ^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&RefCell` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 84 - drop(guard); [INFO] [stdout] 84 + let _ = guard; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.28s [INFO] running `Command { std: "docker" "inspect" "7e29c28284bd1d388775432630f3bfd91fcab01bbbf7f87708c3ff9186035fc7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7e29c28284bd1d388775432630f3bfd91fcab01bbbf7f87708c3ff9186035fc7", kill_on_drop: false }` [INFO] [stdout] 7e29c28284bd1d388775432630f3bfd91fcab01bbbf7f87708c3ff9186035fc7 [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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3b75184cf6414789697713888e99f5c252ab13dfb8cf54f43675adfd8d58809c [INFO] running `Command { std: "docker" "start" "-a" "3b75184cf6414789697713888e99f5c252ab13dfb8cf54f43675adfd8d58809c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.119 [INFO] [stderr] Compiling syn v1.0.86 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling smallvec v1.8.0 [INFO] [stderr] Compiling parking_lot_core v0.9.1 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling bytes v1.1.0 [INFO] [stderr] Compiling tracing-core v0.1.22 [INFO] [stderr] Compiling sharded-slab v0.1.4 [INFO] [stderr] Compiling lock_api v0.4.6 [INFO] [stderr] Compiling thread_local v1.1.4 [INFO] [stderr] Compiling tracing-log v0.1.2 [INFO] [stderr] Compiling mio v0.8.0 [INFO] [stderr] Compiling socket2 v0.4.4 [INFO] [stderr] Compiling num_cpus v1.13.1 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling tracing-subscriber v0.3.9 [INFO] [stderr] Compiling parking_lot v0.12.0 [INFO] [stderr] Compiling tracing-attributes v0.1.19 [INFO] [stderr] Compiling tokio-macros v1.7.0 [INFO] [stderr] Compiling tokio v1.17.0 [INFO] [stderr] Compiling tracing v0.1.31 [INFO] [stderr] Compiling tracing-allocations v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:84:17 [INFO] [stdout] | [INFO] [stdout] 84 | drop(guard); [INFO] [stdout] | ^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&RefCell` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 84 - drop(guard); [INFO] [stdout] 84 + let _ = guard; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Instrument` and `trace_span` [INFO] [stdout] --> examples/simple.rs:1:15 [INFO] [stdout] | [INFO] [stdout] 1 | use tracing::{trace_span, Instrument}; [INFO] [stdout] | ^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stdout] --> src/lib.rs:84:17 [INFO] [stdout] | [INFO] [stdout] 84 | drop(guard); [INFO] [stdout] | ^^^^^-----^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&RefCell` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_references)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 84 - drop(guard); [INFO] [stdout] 84 + let _ = guard; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 17.63s [INFO] running `Command { std: "docker" "inspect" "3b75184cf6414789697713888e99f5c252ab13dfb8cf54f43675adfd8d58809c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3b75184cf6414789697713888e99f5c252ab13dfb8cf54f43675adfd8d58809c", kill_on_drop: false }` [INFO] [stdout] 3b75184cf6414789697713888e99f5c252ab13dfb8cf54f43675adfd8d58809c [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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 29dbd2da54fb878fec1e3fc2d67e90cb695655202b18c4b6398781a234c65fe4 [INFO] running `Command { std: "docker" "start" "-a" "29dbd2da54fb878fec1e3fc2d67e90cb695655202b18c4b6398781a234c65fe4", kill_on_drop: false }` [INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stderr] --> src/lib.rs:84:17 [INFO] [stderr] | [INFO] [stderr] 84 | drop(guard); [INFO] [stderr] | ^^^^^-----^ [INFO] [stderr] | | [INFO] [stderr] | argument has type `&RefCell` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dropping_references)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the expression or result [INFO] [stderr] | [INFO] [stderr] 84 - drop(guard); [INFO] [stderr] 84 + let _ = guard; [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: `tracing-allocations` (lib) generated 1 warning [INFO] [stderr] warning: unused imports: `Instrument` and `trace_span` [INFO] [stderr] --> examples/simple.rs:1:15 [INFO] [stderr] | [INFO] [stderr] 1 | use tracing::{trace_span, Instrument}; [INFO] [stderr] | ^^^^^^^^^^ ^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `tracing-allocations` (example "simple") generated 1 warning (run `cargo fix --example "simple"` to apply 1 suggestion) [INFO] [stderr] warning: `tracing-allocations` (lib test) generated 1 warning (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/tracing_allocations-3a461f20ce921b94) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] [stderr] Doc-tests tracing_allocations [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test src/lib.rs - TracingAllocator (line 17) ... ok [INFO] [stdout] test src/lib.rs - TracingAllocator::new (line 33) ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.41s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "29dbd2da54fb878fec1e3fc2d67e90cb695655202b18c4b6398781a234c65fe4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "29dbd2da54fb878fec1e3fc2d67e90cb695655202b18c4b6398781a234c65fe4", kill_on_drop: false }` [INFO] [stdout] 29dbd2da54fb878fec1e3fc2d67e90cb695655202b18c4b6398781a234c65fe4