[INFO] fetching crate ouroboros_examples 0.14.2...
[INFO] testing ouroboros_examples-0.14.2 against 1.59.0 for beta-1.60-1
[INFO] extracting crate ouroboros_examples 0.14.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate ouroboros_examples 0.14.2 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ouroboros_examples 0.14.2
[INFO] finished tweaking crates.io crate ouroboros_examples 0.14.2
[INFO] tweaked toml for crates.io crate ouroboros_examples 0.14.2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9f6cfeed8794b09444de006401530b6dd4650d8f5d466c860b003866cb65f3f
[INFO] running `Command { std: "docker" "start" "-a" "f9f6cfeed8794b09444de006401530b6dd4650d8f5d466c860b003866cb65f3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9f6cfeed8794b09444de006401530b6dd4650d8f5d466c860b003866cb65f3f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9f6cfeed8794b09444de006401530b6dd4650d8f5d466c860b003866cb65f3f", kill_on_drop: false }`
[INFO] [stdout] f9f6cfeed8794b09444de006401530b6dd4650d8f5d466c860b003866cb65f3f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55093b823f3cc2696cdb8e48f8a6bd309decc3e5aa5332b148d2da0d413e9b26
[INFO] running `Command { std: "docker" "start" "-a" "55093b823f3cc2696cdb8e48f8a6bd309decc3e5aa5332b148d2da0d413e9b26", kill_on_drop: false }`
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling aliasable v0.1.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling ouroboros_macro v0.14.2
[INFO] [stderr]    Compiling ouroboros v0.14.2
[INFO] [stderr]    Compiling ouroboros_examples v0.14.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `data_ref`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     data_ref: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `c`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     c: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `float_reference`
[INFO] [stdout]   --> src/lib.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     float_reference: &'this mut f32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `int_reference`
[INFO] [stdout]   --> src/lib.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     int_reference: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data_ref`
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     data_ref: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.92s
[INFO] running `Command { std: "docker" "inspect" "55093b823f3cc2696cdb8e48f8a6bd309decc3e5aa5332b148d2da0d413e9b26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55093b823f3cc2696cdb8e48f8a6bd309decc3e5aa5332b148d2da0d413e9b26", kill_on_drop: false }`
[INFO] [stdout] 55093b823f3cc2696cdb8e48f8a6bd309decc3e5aa5332b148d2da0d413e9b26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2b4492cf415dd90a165f426c5c3a61c3a6b7f6e81d8ba234faf64a65dfcfb1cc
[INFO] running `Command { std: "docker" "start" "-a" "2b4492cf415dd90a165f426c5c3a61c3a6b7f6e81d8ba234faf64a65dfcfb1cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling trybuild v1.0.56
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stdout] warning: field is never read: `data_ref`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     data_ref: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `c`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     c: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `float_reference`
[INFO] [stdout]   --> src/lib.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     float_reference: &'this mut f32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `int_reference`
[INFO] [stdout]   --> src/lib.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     int_reference: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data_ref`
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     data_ref: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling ouroboros_examples v0.14.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `data_ref`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     data_ref: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `c`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     c: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `float_reference`
[INFO] [stdout]   --> src/lib.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     float_reference: &'this mut f32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `int_reference`
[INFO] [stdout]   --> src/lib.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 |     int_reference: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data_ref`
[INFO] [stdout]   --> src/lib.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     data_ref: &'this i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 15.10s
[INFO] running `Command { std: "docker" "inspect" "2b4492cf415dd90a165f426c5c3a61c3a6b7f6e81d8ba234faf64a65dfcfb1cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b4492cf415dd90a165f426c5c3a61c3a6b7f6e81d8ba234faf64a65dfcfb1cc", kill_on_drop: false }`
[INFO] [stdout] 2b4492cf415dd90a165f426c5c3a61c3a6b7f6e81d8ba234faf64a65dfcfb1cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 20e21518fbe7415feed65fa73d7b32891fa4a999fffcfd53e1ebadc03f46fd9e
[INFO] running `Command { std: "docker" "start" "-a" "20e21518fbe7415feed65fa73d7b32891fa4a999fffcfd53e1ebadc03f46fd9e", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `data_ref`
[INFO] [stderr]   --> src/lib.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     data_ref: &'this i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `c`
[INFO] [stderr]   --> src/lib.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     c: &'this i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `float_reference`
[INFO] [stderr]   --> src/lib.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     float_reference: &'this mut f32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `int_reference`
[INFO] [stderr]   --> src/lib.rs:31:5
[INFO] [stderr]    |
[INFO] [stderr] 31 |     int_reference: &'this i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data_ref`
[INFO] [stderr]   --> src/lib.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     data_ref: &'this i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `ouroboros_examples` (lib) generated 5 warnings
[INFO] [stderr] warning: `ouroboros_examples` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ouroboros_examples-580a5b7982407f09)
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test ok_tests::async_try_new ... ok
[INFO] [stdout] test ok_tests::box_and_mut_ref ... ok
[INFO] [stdout] test ok_tests::async_new ... ok
[INFO] [stdout] test ok_tests::box_and_ref ... ok
[INFO] [stdout] test ok_tests::async_try_new_err ... ok
[INFO] [stdout] test ok_tests::self_reference_with ... ok
[INFO] [stdout] test ok_tests::into_heads ... ok
[INFO] [stdout] test ok_tests::single_lifetime ... ok
[INFO] [stdout] test ok_tests::template_mess ... 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] test ok_tests::double_lifetime ... ok
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]     Checking aliasable v0.1.3
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling ouroboros_macro v0.14.2
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking ouroboros v0.14.2
[INFO] [stderr]     Checking ouroboros_examples v0.14.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking ouroboros_examples-tests v0.0.0 (/opt/rustwide/target/tests/ouroboros_examples)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.38s
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] test src/fail_tests/auto_covariant.rs ... ok
[INFO] [stderr] test src/fail_tests/borrow_before_declaration.rs ... ok
[INFO] [stderr] test src/fail_tests/borrowchk_custom_drop.rs ... ok
[INFO] [stderr] test src/fail_tests/borrowchk_external_lifetime.rs ... ok
[INFO] [stderr] test src/fail_tests/double_mutable_borrow.rs ... ok
[INFO] [stderr] test src/fail_tests/move_ref_outside_closure.rs ... ok
[INFO] [stderr] test src/fail_tests/refuse_non_std_box.rs ... ok
[INFO] [stderr] test src/fail_tests/use_after_free.rs ... ok
[INFO] [stdout] test ok_tests::compile_tests::fails_ok ... ok
[INFO] [stderr] test src/fail_tests/use_moved_ref_after_free.rs ... ok
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 20.53s
[INFO] [stderr] 
[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" "20e21518fbe7415feed65fa73d7b32891fa4a999fffcfd53e1ebadc03f46fd9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20e21518fbe7415feed65fa73d7b32891fa4a999fffcfd53e1ebadc03f46fd9e", kill_on_drop: false }`
[INFO] [stdout] 20e21518fbe7415feed65fa73d7b32891fa4a999fffcfd53e1ebadc03f46fd9e