[INFO] fetching crate quetta 0.1.0...
[INFO] testing quetta-0.1.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate quetta 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate quetta 0.1.0
[INFO] finished tweaking crates.io crate quetta 0.1.0
[INFO] tweaked toml for crates.io crate quetta 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate quetta 0.1.0 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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] f3b38ce218b164378c077177e0f36ac2fad52d6b8ae3e5af1040c197f7722682
[INFO] running `Command { std: "docker" "start" "-a" "f3b38ce218b164378c077177e0f36ac2fad52d6b8ae3e5af1040c197f7722682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3b38ce218b164378c077177e0f36ac2fad52d6b8ae3e5af1040c197f7722682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3b38ce218b164378c077177e0f36ac2fad52d6b8ae3e5af1040c197f7722682", kill_on_drop: false }`
[INFO] [stdout] f3b38ce218b164378c077177e0f36ac2fad52d6b8ae3e5af1040c197f7722682
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 3a1e8b9d43cc093da4d8d7c539634cb189ff9c8692d9e65a2d271a6e0f03e7e5
[INFO] running `Command { std: "docker" "start" "-a" "3a1e8b9d43cc093da4d8d7c539634cb189ff9c8692d9e65a2d271a6e0f03e7e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling quetta v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "3a1e8b9d43cc093da4d8d7c539634cb189ff9c8692d9e65a2d271a6e0f03e7e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a1e8b9d43cc093da4d8d7c539634cb189ff9c8692d9e65a2d271a6e0f03e7e5", kill_on_drop: false }`
[INFO] [stdout] 3a1e8b9d43cc093da4d8d7c539634cb189ff9c8692d9e65a2d271a6e0f03e7e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 0d423db6ed3ed37f906e88151945ff46365b1e8d1ec3a8c60c3784c7466a677b
[INFO] running `Command { std: "docker" "start" "-a" "0d423db6ed3ed37f906e88151945ff46365b1e8d1ec3a8c60c3784c7466a677b", kill_on_drop: false }`
[INFO] [stderr]    Compiling quetta v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "0d423db6ed3ed37f906e88151945ff46365b1e8d1ec3a8c60c3784c7466a677b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d423db6ed3ed37f906e88151945ff46365b1e8d1ec3a8c60c3784c7466a677b", kill_on_drop: false }`
[INFO] [stdout] 0d423db6ed3ed37f906e88151945ff46365b1e8d1ec3a8c60c3784c7466a677b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 6fd46723e057084487250c3195ea41acf42ceddb1cf8d738a930f649c235b1e9
[INFO] running `Command { std: "docker" "start" "-a" "6fd46723e057084487250c3195ea41acf42ceddb1cf8d738a930f649c235b1e9", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/quetta-41f693fb7451458b)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::test_lift_many ... ok
[INFO] [stdout] test tests::test_lift ... ok
[INFO] [stdout] test tests::test_slice1 ... ok
[INFO] [stdout] test tests::test_invalid_slices1 - should panic ... ok
[INFO] [stdout] test tests::test_invalid_slices2 - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests quetta
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test src/lib.rs - Text::is_empty (line 234) ... ok
[INFO] [stdout] test src/lib.rs - Text::lift_many (line 338) ... ok
[INFO] [stdout] test src/lib.rs - Text::lift (line 298) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] test src/lib.rs - Text::lift_slice (line 264) ... ok
[INFO] [stdout] test src/lib.rs - Text::substring (line 174) ... ok
[INFO] [stdout] test src/lib.rs - Text::len (line 221) ... ok
[INFO] [stdout] test src/lib.rs - Text::try_lift (line 281) ... FAILED
[INFO] [stdout] test src/lib.rs - Text::try_lift_many (line 315) ... ok
[INFO] [stdout] test src/lib.rs - Text::slice (line 207) ... ok
[INFO] [stdout] test src/lib.rs - Text::try_lift_slice (line 248) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Text::lift (line 298) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/lib.rs:303:42
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_298_0() {
[INFO] [stdout]   |                                      ----------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 8 | let trimmed = text.try_lift(|t| t.trim())?;
[INFO] [stdout]   |                                          ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Text::try_lift (line 281) stdout ----
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
[INFO] [stdout]  --> src/lib.rs:286:42
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn main() { #[allow(non_snake_case)] fn _doctest_main_src_lib_rs_281_0() {
[INFO] [stdout]   |                                      ----------------------------------- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout] ...
[INFO] [stdout] 8 | let trimmed = text.try_lift(|t| t.trim())?;
[INFO] [stdout]   |                                          ^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Text::lift (line 298)
[INFO] [stdout]     src/lib.rs - Text::try_lift (line 281)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 9 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.02s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "6fd46723e057084487250c3195ea41acf42ceddb1cf8d738a930f649c235b1e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fd46723e057084487250c3195ea41acf42ceddb1cf8d738a930f649c235b1e9", kill_on_drop: false }`
[INFO] [stdout] 6fd46723e057084487250c3195ea41acf42ceddb1cf8d738a930f649c235b1e9