[INFO] fetching crate tracing-allocations 0.1.0... [INFO] building tracing-allocations-0.1.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1 [INFO] extracting crate tracing-allocations 0.1.0 into /workspace/builds/worker-2-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-2-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate tracing-allocations 0.1.0 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f7d9236e0bfa9cfc349fe389468976f2c5ab643878134129adb56b71ebc4a9b1 [INFO] running `Command { std: "docker" "start" "-a" "f7d9236e0bfa9cfc349fe389468976f2c5ab643878134129adb56b71ebc4a9b1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f7d9236e0bfa9cfc349fe389468976f2c5ab643878134129adb56b71ebc4a9b1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f7d9236e0bfa9cfc349fe389468976f2c5ab643878134129adb56b71ebc4a9b1", kill_on_drop: false }` [INFO] [stdout] f7d9236e0bfa9cfc349fe389468976f2c5ab643878134129adb56b71ebc4a9b1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4f56d5f07e026d6c4fdac652dd0aed31a327c8a15a0519ff18c7121a8ad08613 [INFO] running `Command { std: "docker" "start" "-a" "4f56d5f07e026d6c4fdac652dd0aed31a327c8a15a0519ff18c7121a8ad08613", 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 8.18s [INFO] running `Command { std: "docker" "inspect" "4f56d5f07e026d6c4fdac652dd0aed31a327c8a15a0519ff18c7121a8ad08613", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4f56d5f07e026d6c4fdac652dd0aed31a327c8a15a0519ff18c7121a8ad08613", kill_on_drop: false }` [INFO] [stdout] 4f56d5f07e026d6c4fdac652dd0aed31a327c8a15a0519ff18c7121a8ad08613 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 982aea067bb0f7f02e8275d6b2a39f3324a57190fc3a8ba9ecaba9c9d099eb27 [INFO] running `Command { std: "docker" "start" "-a" "982aea067bb0f7f02e8275d6b2a39f3324a57190fc3a8ba9ecaba9c9d099eb27", 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 parking_lot_core v0.9.1 [INFO] [stderr] Compiling smallvec v1.8.0 [INFO] [stderr] Compiling once_cell v1.10.0 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling ansi_term v0.12.1 [INFO] [stderr] Compiling bytes v1.1.0 [INFO] [stderr] Compiling tracing-core v0.1.22 [INFO] [stderr] Compiling lock_api v0.4.6 [INFO] [stderr] Compiling sharded-slab v0.1.4 [INFO] [stderr] Compiling thread_local v1.1.4 [INFO] [stderr] Compiling tracing-log v0.1.2 [INFO] [stderr] Compiling tracing-subscriber v0.3.9 [INFO] [stderr] Compiling socket2 v0.4.4 [INFO] [stderr] Compiling mio v0.8.0 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling num_cpus v1.13.1 [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: 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] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 17.14s [INFO] running `Command { std: "docker" "inspect" "982aea067bb0f7f02e8275d6b2a39f3324a57190fc3a8ba9ecaba9c9d099eb27", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "982aea067bb0f7f02e8275d6b2a39f3324a57190fc3a8ba9ecaba9c9d099eb27", kill_on_drop: false }` [INFO] [stdout] 982aea067bb0f7f02e8275d6b2a39f3324a57190fc3a8ba9ecaba9c9d099eb27