[INFO] fetching crate perm 0.9.3...
[INFO] testing perm-0.9.3 against 1.90.0 for beta-1.91-3
[INFO] extracting crate perm 0.9.3 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate perm 0.9.3
[INFO] finished tweaking crates.io crate perm 0.9.3
[INFO] tweaked toml for crates.io crate perm 0.9.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate perm 0.9.3 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eefc8c7e7e782ae03deec7ba15067ea18d0fc8bd8225597e0de55167cc005d39
[INFO] running `Command { std: "docker" "start" "-a" "eefc8c7e7e782ae03deec7ba15067ea18d0fc8bd8225597e0de55167cc005d39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eefc8c7e7e782ae03deec7ba15067ea18d0fc8bd8225597e0de55167cc005d39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eefc8c7e7e782ae03deec7ba15067ea18d0fc8bd8225597e0de55167cc005d39", kill_on_drop: false }`
[INFO] [stdout] eefc8c7e7e782ae03deec7ba15067ea18d0fc8bd8225597e0de55167cc005d39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af4b01718b5954c222fb8cb6f8e5d34e928edfaa0228e05481ca53752c4281b4
[INFO] running `Command { std: "docker" "start" "-a" "af4b01718b5954c222fb8cb6f8e5d34e928edfaa0228e05481ca53752c4281b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling perm v0.9.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/error.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Error {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub (crate) const fn new(line: u32, module_path: &'static str, msg: Option<Cow<'static, str>>) -> Self {
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "af4b01718b5954c222fb8cb6f8e5d34e928edfaa0228e05481ca53752c4281b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af4b01718b5954c222fb8cb6f8e5d34e928edfaa0228e05481ca53752c4281b4", kill_on_drop: false }`
[INFO] [stdout] af4b01718b5954c222fb8cb6f8e5d34e928edfaa0228e05481ca53752c4281b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c02b317252a0416c28c51bac854e4565c62596b9e2b884d22787d1c6fff67584
[INFO] running `Command { std: "docker" "start" "-a" "c02b317252a0416c28c51bac854e4565c62596b9e2b884d22787d1c6fff67584", kill_on_drop: false }`
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/error.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Error {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub (crate) const fn new(line: u32, module_path: &'static str, msg: Option<Cow<'static, str>>) -> Self {
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling perm v0.9.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `must_use` that must be used
[INFO] [stdout]   --> tests/perm_iter.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     format!("{:?}", PermIter::new(vec![0_u8..=1, 0..=2, 0..=0], &buffer));
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let _ = format!("{:?}", PermIter::new(vec![0_u8..=1, 0..=2, 0..=0], &buffer));
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/error.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl Error {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 51 |     pub (crate) const fn new(line: u32, module_path: &'static str, msg: Option<Cow<'static, str>>) -> Self {
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "c02b317252a0416c28c51bac854e4565c62596b9e2b884d22787d1c6fff67584", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c02b317252a0416c28c51bac854e4565c62596b9e2b884d22787d1c6fff67584", kill_on_drop: false }`
[INFO] [stdout] c02b317252a0416c28c51bac854e4565c62596b9e2b884d22787d1c6fff67584
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 824671f84fdf57ffb82d63307c7fc91adc019b74928d47a584d3ef440ec52e05
[INFO] running `Command { std: "docker" "start" "-a" "824671f84fdf57ffb82d63307c7fc91adc019b74928d47a584d3ef440ec52e05", kill_on_drop: false }`
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/error.rs:51:26
[INFO] [stderr]    |
[INFO] [stderr] 48 | impl Error {
[INFO] [stderr]    | ---------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 51 |     pub (crate) const fn new(line: u32, module_path: &'static str, msg: Option<Cow<'static, str>>) -> Self {
[INFO] [stderr]    |                          ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `perm` (lib) generated 1 warning
[INFO] [stderr] warning: unused return value of `must_use` that must be used
[INFO] [stderr]   --> tests/perm_iter.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 |     format!("{:?}", PermIter::new(vec![0_u8..=1, 0..=2, 0..=0], &buffer));
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let _ = format!("{:?}", PermIter::new(vec![0_u8..=1, 0..=2, 0..=0], &buffer));
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `perm` (test "perm_iter") generated 1 warning
[INFO] [stderr] warning: `perm` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/perm-4c5a82c55376a962)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_crate_version ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/perm_iter.rs (/opt/rustwide/target/debug/deps/perm_iter-50e7bfce435de306)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test perm_iters_implementation_of_iterator_nth ... ok
[INFO] [stdout] test perm_iters ... ok
[INFO] [stdout] test perm_iters_implementation_of_iterator_nth_with_simple_data ... ok
[INFO] [stdout] test perm_iters_implementation_of_iterator_nth_with_small_data ... ok
[INFO] [stdout] test perm_iters_clone_with ... ok
[INFO] [stdout] test perm_iters_implementation_of_iterator_nth_with_large_data ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 31.49s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests perm
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/perm_iter.rs - perm_iter::PermIter (line 55) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.72s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "824671f84fdf57ffb82d63307c7fc91adc019b74928d47a584d3ef440ec52e05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "824671f84fdf57ffb82d63307c7fc91adc019b74928d47a584d3ef440ec52e05", kill_on_drop: false }`
[INFO] [stdout] 824671f84fdf57ffb82d63307c7fc91adc019b74928d47a584d3ef440ec52e05