[INFO] fetching crate ouroboros_examples 0.18.5... [INFO] testing ouroboros_examples-0.18.5 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-2 [INFO] extracting crate ouroboros_examples 0.18.5 into /workspace/builds/worker-4-tc2/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-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate ouroboros_examples 0.18.5 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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: v1.0.116) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a395a67d33b391934df66c6a934a0be05b22560336d15fed061b6cbe46b74400 [INFO] running `Command { std: "docker" "start" "-a" "a395a67d33b391934df66c6a934a0be05b22560336d15fed061b6cbe46b74400", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a395a67d33b391934df66c6a934a0be05b22560336d15fed061b6cbe46b74400", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a395a67d33b391934df66c6a934a0be05b22560336d15fed061b6cbe46b74400", kill_on_drop: false }` [INFO] [stdout] a395a67d33b391934df66c6a934a0be05b22560336d15fed061b6cbe46b74400 [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=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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4f1b5bf16f8bb5e50b72fea6ea90b4625a3533c792a0e9fb2d356e8ae73375b2 [INFO] running `Command { std: "docker" "start" "-a" "4f1b5bf16f8bb5e50b72fea6ea90b4625a3533c792a0e9fb2d356e8ae73375b2", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.106 [INFO] [stderr] Compiling quote v1.0.45 [INFO] [stderr] Compiling unicode-ident v1.0.24 [INFO] [stderr] Compiling yansi v1.0.1 [INFO] [stderr] Compiling heck v0.4.1 [INFO] [stderr] Compiling aliasable v0.1.3 [INFO] [stderr] Compiling proc-macro2-diagnostics v0.10.1 [INFO] [stderr] Compiling syn v2.0.117 [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 8.82s [INFO] running `Command { std: "docker" "inspect" "4f1b5bf16f8bb5e50b72fea6ea90b4625a3533c792a0e9fb2d356e8ae73375b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4f1b5bf16f8bb5e50b72fea6ea90b4625a3533c792a0e9fb2d356e8ae73375b2", kill_on_drop: false }` [INFO] [stdout] 4f1b5bf16f8bb5e50b72fea6ea90b4625a3533c792a0e9fb2d356e8ae73375b2 [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=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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c5660d9a17d99be0f810f20b161c02830e6a278a38449bc6974c56fc750216fa [INFO] running `Command { std: "docker" "start" "-a" "c5660d9a17d99be0f810f20b161c02830e6a278a38449bc6974c56fc750216fa", kill_on_drop: false }` [INFO] [stderr] Compiling zmij v1.0.21 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling serde_json v1.0.149 [INFO] [stderr] Compiling trybuild v1.0.85 [INFO] [stderr] Compiling memchr v2.8.0 [INFO] [stderr] Compiling itoa v1.0.18 [INFO] [stderr] Compiling serde_derive v1.0.228 [INFO] [stderr] Compiling tokio-macros v2.7.0 [INFO] [stderr] Compiling pin-project-lite v0.2.17 [INFO] [stderr] Compiling glob v0.3.3 [INFO] [stderr] Compiling once_cell v1.21.4 [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 basic-toml v0.1.10 [INFO] [stderr] Compiling tokio v1.52.1 [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 15.89s [INFO] running `Command { std: "docker" "inspect" "c5660d9a17d99be0f810f20b161c02830e6a278a38449bc6974c56fc750216fa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c5660d9a17d99be0f810f20b161c02830e6a278a38449bc6974c56fc750216fa", kill_on_drop: false }` [INFO] [stdout] c5660d9a17d99be0f810f20b161c02830e6a278a38449bc6974c56fc750216fa [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=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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] c5469151f1ca1d5cd20fc9035f3dcfb725095c3b5ec5c9108679b746b384971d [INFO] running `Command { std: "docker" "start" "-a" "c5469151f1ca1d5cd20fc9035f3dcfb725095c3b5ec5c9108679b746b384971d", 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 0.07s [INFO] [stderr] Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ouroboros_examples-5f7a431a142d35c3) [INFO] [stdout] [INFO] [stdout] running 12 tests [INFO] [stdout] test ok_tests::async_try_new ... ok [INFO] [stdout] test ok_tests::async_new ... ok [INFO] [stdout] test ok_tests::box_and_mut_ref ... ok [INFO] [stdout] test ok_tests::async_try_new_err ... ok [INFO] [stdout] test ok_tests::into_heads ... ok [INFO] [stdout] test ok_tests::self_reference_with ... ok [INFO] [stdout] test ok_tests::double_lifetime ... ok [INFO] [stdout] test ok_tests::try_new ... ok [INFO] [stdout] test ok_tests::try_new_err ... ok [INFO] [stdout] test ok_tests::box_and_ref ... ok [INFO] [stdout] test ok_tests::single_lifetime ... 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] [stderr] Doc-tests ouroboros_examples [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" "c5469151f1ca1d5cd20fc9035f3dcfb725095c3b5ec5c9108679b746b384971d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c5469151f1ca1d5cd20fc9035f3dcfb725095c3b5ec5c9108679b746b384971d", kill_on_drop: false }` [INFO] [stdout] c5469151f1ca1d5cd20fc9035f3dcfb725095c3b5ec5c9108679b746b384971d