[INFO] fetching crate proptest 1.6.0...
[INFO] checking proptest-1.6.0 against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249
[INFO] extracting crate proptest 1.6.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate proptest 1.6.0 on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate proptest 1.6.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate proptest 1.6.0
[INFO] tweaked toml for crates.io crate proptest 1.6.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate proptest 1.6.0 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" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] facd3509245110da2cee1b48ee3055a047ee3e513fc50f1caac33147689953b2
[INFO] running `Command { std: "docker" "start" "-a" "facd3509245110da2cee1b48ee3055a047ee3e513fc50f1caac33147689953b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "facd3509245110da2cee1b48ee3055a047ee3e513fc50f1caac33147689953b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "facd3509245110da2cee1b48ee3055a047ee3e513fc50f1caac33147689953b2", kill_on_drop: false }`
[INFO] [stdout] facd3509245110da2cee1b48ee3055a047ee3e513fc50f1caac33147689953b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c38ddd9c187fc8d8f97002dfdad94ebaa287bb9fd83e3e02c3ce4c36816c0f1a
[INFO] running `Command { std: "docker" "start" "-a" "c38ddd9c187fc8d8f97002dfdad94ebaa287bb9fd83e3e02c3ce4c36816c0f1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling rustix v0.38.28
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]    Compiling serde v1.0.216
[INFO] [stderr]     Checking linux-raw-sys v0.4.12
[INFO] [stderr]     Checking bitflags v2.4.1
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling serde_json v1.0.133
[INFO] [stderr]     Checking fastrand v2.0.1
[INFO] [stderr]     Checking bit-vec v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]     Checking itoa v1.0.10
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking ryu v1.0.16
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking unarray v0.1.4
[INFO] [stderr]     Checking bit-set v0.8.0
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.90
[INFO] [stderr]     Checking getrandom v0.2.11
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking tempfile v3.9.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand_xorshift v0.3.0
[INFO] [stderr]     Checking rusty-fork v0.3.0
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking proptest v1.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.216
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stdout] warning: struct `NoopFailurePersistence` is never constructed
[INFO] [stdout]   --> src/test_runner/failure_persistence/noop.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct NoopFailurePersistence;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `NoopFailurePersistence` has a derived impl for the trait `Default`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `errors::TestError<<S as strategy::traits::Strategy>::Value>` to `errors::TestError<<S as strategy::traits::Strategy>::Value>`
[INFO] [stdout]    --> src/test_runner/runner.rs:648:28
[INFO] [stdout]     |
[INFO] [stdout] 648 |                 return Err(e.into());
[INFO] [stdout]     |                            ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proptest` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c38ddd9c187fc8d8f97002dfdad94ebaa287bb9fd83e3e02c3ce4c36816c0f1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c38ddd9c187fc8d8f97002dfdad94ebaa287bb9fd83e3e02c3ce4c36816c0f1a", kill_on_drop: false }`
[INFO] [stdout] c38ddd9c187fc8d8f97002dfdad94ebaa287bb9fd83e3e02c3ce4c36816c0f1a