[INFO] fetching crate ouroboros_examples 0.18.5... [INFO] testing ouroboros_examples-0.18.5 against 1.91.0 for beta-1.92-2 [INFO] extracting crate ouroboros_examples 0.18.5 into /workspace/builds/worker-2-tc1/source [INFO] started tweaking crates.io crate ouroboros_examples 0.18.5 [INFO] finished tweaking crates.io crate ouroboros_examples 0.18.5 [INFO] tweaked toml for crates.io crate ouroboros_examples 0.18.5 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate ouroboros_examples 0.18.5 on toolchain 1.91.0 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 31 packages to latest compatible versions [INFO] [stderr] Adding trybuild v1.0.85 (available: v1.0.113) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded proc-macro2-diagnostics v0.10.1 [INFO] [stderr] Downloaded ouroboros v0.18.5 [INFO] [stderr] Downloaded ouroboros_macro v0.18.5 [INFO] [stderr] Downloaded aliasable v0.1.3 [INFO] [stderr] Downloaded trybuild v1.0.85 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b1a716ca06fc8bdb03840e8e9449808b5821ab5cf5cfb57ae4a15fdb594dea9b [INFO] running `Command { std: "docker" "start" "-a" "b1a716ca06fc8bdb03840e8e9449808b5821ab5cf5cfb57ae4a15fdb594dea9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b1a716ca06fc8bdb03840e8e9449808b5821ab5cf5cfb57ae4a15fdb594dea9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b1a716ca06fc8bdb03840e8e9449808b5821ab5cf5cfb57ae4a15fdb594dea9b", kill_on_drop: false }` [INFO] [stdout] b1a716ca06fc8bdb03840e8e9449808b5821ab5cf5cfb57ae4a15fdb594dea9b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8615137582fde172f92d90f0ab856a361fc20fafc03f94b005fdc2c8e35f57d2 [INFO] running `Command { std: "docker" "start" "-a" "8615137582fde172f92d90f0ab856a361fc20fafc03f94b005fdc2c8e35f57d2", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2-diagnostics v0.10.1 [INFO] [stderr] Compiling yansi v1.0.1 [INFO] [stderr] Compiling heck v0.4.1 [INFO] [stderr] Compiling aliasable v0.1.3 [INFO] [stderr] Compiling ouroboros_macro v0.18.5 [INFO] [stderr] Compiling ouroboros v0.18.5 [INFO] [stderr] Compiling ouroboros_examples v0.18.5 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/lib.rs:11:43 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct Ext<'this, T, const REV: bool>(&'this Box); [INFO] [stdout] | --- field in this struct ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.16s [INFO] running `Command { std: "docker" "inspect" "8615137582fde172f92d90f0ab856a361fc20fafc03f94b005fdc2c8e35f57d2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8615137582fde172f92d90f0ab856a361fc20fafc03f94b005fdc2c8e35f57d2", kill_on_drop: false }` [INFO] [stdout] 8615137582fde172f92d90f0ab856a361fc20fafc03f94b005fdc2c8e35f57d2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8824682cc484b17e2039676220568271f5be3b458eb803db9548b0be1479e91e [INFO] running `Command { std: "docker" "start" "-a" "8824682cc484b17e2039676220568271f5be3b458eb803db9548b0be1479e91e", kill_on_drop: false }` [INFO] [stderr] Compiling rustversion v1.0.22 [INFO] [stderr] Compiling trybuild v1.0.85 [INFO] [stderr] Compiling glob v0.3.3 [INFO] [stderr] Compiling tokio-macros v2.6.0 [INFO] [stderr] Compiling basic-toml v0.1.10 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/lib.rs:11:43 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct Ext<'this, T, const REV: bool>(&'this Box); [INFO] [stdout] | --- field in this struct ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling tokio v1.48.0 [INFO] [stderr] Compiling ouroboros_examples v0.18.5 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/lib.rs:11:43 [INFO] [stdout] | [INFO] [stdout] 11 | pub struct Ext<'this, T, const REV: bool>(&'this Box); [INFO] [stdout] | --- field in this struct ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider removing this field [INFO] [stdout] = note: `#[warn(dead_code)]` (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/ok_tests.rs:259:5 [INFO] [stdout] | [INFO] [stdout] 259 | drop(instance.borrow_external()); [INFO] [stdout] | ^^^^^--------------------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&&str` [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] 259 - drop(instance.borrow_external()); [INFO] [stdout] 259 + let _ = instance.borrow_external(); [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/ok_tests.rs:260:5 [INFO] [stdout] | [INFO] [stdout] 260 | drop(instance.borrow_internal()); [INFO] [stdout] | ^^^^^--------------------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `&&&str` [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 260 - drop(instance.borrow_internal()); [INFO] [stdout] 260 + let _ = instance.borrow_internal(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 11.56s [INFO] running `Command { std: "docker" "inspect" "8824682cc484b17e2039676220568271f5be3b458eb803db9548b0be1479e91e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8824682cc484b17e2039676220568271f5be3b458eb803db9548b0be1479e91e", kill_on_drop: false }` [INFO] [stdout] 8824682cc484b17e2039676220568271f5be3b458eb803db9548b0be1479e91e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 92bda6c10cd8e9ccdb59de3a9bca1da40e53860557c461941455a1a424d88990 [INFO] running `Command { std: "docker" "start" "-a" "92bda6c10cd8e9ccdb59de3a9bca1da40e53860557c461941455a1a424d88990", kill_on_drop: false }` [INFO] [stderr] warning: field `0` is never read [INFO] [stderr] --> src/lib.rs:11:43 [INFO] [stderr] | [INFO] [stderr] 11 | pub struct Ext<'this, T, const REV: bool>(&'this Box); [INFO] [stderr] | --- field in this struct ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: consider removing this field [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stderr] --> src/ok_tests.rs:259:5 [INFO] [stderr] | [INFO] [stderr] 259 | drop(instance.borrow_external()); [INFO] [stderr] | ^^^^^--------------------------^ [INFO] [stderr] | | [INFO] [stderr] | argument has type `&&str` [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] 259 - drop(instance.borrow_external()); [INFO] [stderr] 259 + let _ = instance.borrow_external(); [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing [INFO] [stderr] --> src/ok_tests.rs:260:5 [INFO] [stderr] | [INFO] [stderr] 260 | drop(instance.borrow_internal()); [INFO] [stderr] | ^^^^^--------------------------^ [INFO] [stderr] | | [INFO] [stderr] | argument has type `&&&str` [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the expression or result [INFO] [stderr] | [INFO] [stderr] 260 - drop(instance.borrow_internal()); [INFO] [stderr] 260 + let _ = instance.borrow_internal(); [INFO] [stderr] | [INFO] [stderr] [INFO] [stderr] warning: `ouroboros_examples` (lib) generated 1 warning [INFO] [stderr] warning: `ouroboros_examples` (lib test) generated 3 warnings (1 duplicate) [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ouroboros_examples-d865ba26d8bb6c36) [INFO] [stdout] [INFO] [stdout] running 12 tests [INFO] [stdout] test ok_tests::async_new ... ok [INFO] [stdout] test ok_tests::async_try_new_err ... ok [INFO] [stdout] test ok_tests::async_try_new ... ok [INFO] [stdout] test ok_tests::box_and_ref ... ok [INFO] [stdout] test ok_tests::double_lifetime ... ok [INFO] [stdout] test ok_tests::self_reference_with ... ok [INFO] [stdout] test ok_tests::box_and_mut_ref ... ok [INFO] [stderr] Doc-tests ouroboros_examples [INFO] [stdout] test ok_tests::into_heads ... ok [INFO] [stdout] test ok_tests::single_lifetime ... ok [INFO] [stdout] test ok_tests::try_new ... ok [INFO] [stdout] test ok_tests::try_new_err ... ok [INFO] [stdout] test ok_tests::try_new_recover_heads ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s [INFO] [stdout] [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] running `Command { std: "docker" "inspect" "92bda6c10cd8e9ccdb59de3a9bca1da40e53860557c461941455a1a424d88990", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "92bda6c10cd8e9ccdb59de3a9bca1da40e53860557c461941455a1a424d88990", kill_on_drop: false }` [INFO] [stdout] 92bda6c10cd8e9ccdb59de3a9bca1da40e53860557c461941455a1a424d88990