[INFO] fetching crate deep-flatten 0.1.0...
[INFO] testing deep-flatten-0.1.0 against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] extracting crate deep-flatten 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate deep-flatten 0.1.0
[INFO] finished tweaking crates.io crate deep-flatten 0.1.0
[INFO] tweaked toml for crates.io crate deep-flatten 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate deep-flatten 0.1.0 on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 36ddba2b6117c6b0f235acf4b58d12b254ec77d99a8f05cf0b5ca2206811546f
[INFO] running `Command { std: "docker" "start" "-a" "36ddba2b6117c6b0f235acf4b58d12b254ec77d99a8f05cf0b5ca2206811546f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36ddba2b6117c6b0f235acf4b58d12b254ec77d99a8f05cf0b5ca2206811546f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36ddba2b6117c6b0f235acf4b58d12b254ec77d99a8f05cf0b5ca2206811546f", kill_on_drop: false }`
[INFO] [stdout] 36ddba2b6117c6b0f235acf4b58d12b254ec77d99a8f05cf0b5ca2206811546f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1507fb8c382456b21533034d764ef34ad21c7f4215547efed3ef600e0483b51b
[INFO] running `Command { std: "docker" "start" "-a" "1507fb8c382456b21533034d764ef34ad21c7f4215547efed3ef600e0483b51b", kill_on_drop: false }`
[INFO] [stderr]    Compiling deep-flatten v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "1507fb8c382456b21533034d764ef34ad21c7f4215547efed3ef600e0483b51b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1507fb8c382456b21533034d764ef34ad21c7f4215547efed3ef600e0483b51b", kill_on_drop: false }`
[INFO] [stdout] 1507fb8c382456b21533034d764ef34ad21c7f4215547efed3ef600e0483b51b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c788b8577511c8818d40531661789fc077af140c7d54a5d4ec6342b0eaf1e0f4
[INFO] running `Command { std: "docker" "start" "-a" "c788b8577511c8818d40531661789fc077af140c7d54a5d4ec6342b0eaf1e0f4", kill_on_drop: false }`
[INFO] [stderr]    Compiling deep-flatten v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.58s
[INFO] running `Command { std: "docker" "inspect" "c788b8577511c8818d40531661789fc077af140c7d54a5d4ec6342b0eaf1e0f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c788b8577511c8818d40531661789fc077af140c7d54a5d4ec6342b0eaf1e0f4", kill_on_drop: false }`
[INFO] [stdout] c788b8577511c8818d40531661789fc077af140c7d54a5d4ec6342b0eaf1e0f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=forbid -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d279b4a4a45fb8c26ab1582d9a5ff245ecec4edc9125c9d01a222aa34eccd9f2
[INFO] running `Command { std: "docker" "start" "-a" "d279b4a4a45fb8c26ab1582d9a5ff245ecec4edc9125c9d01a222aa34eccd9f2", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/deep_flatten-1e3d4ffc273b85e0)
[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] [stderr]      Running tests/flatten_option.rs (/opt/rustwide/target/debug/deps/flatten_option-04973701e4edf5d8)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test test_flatten ... ok
[INFO] [stdout] test test_very_deep_flatten ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests deep_flatten
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 8) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 8) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `deep_flatten::DeepFlatten`
[INFO] [stdout]  --> src/lib.rs:10:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use deep_flatten::DeepFlatten;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ no `DeepFlatten` in the root
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `deep_flatten` found for enum `Option` in the current scope
[INFO] [stdout]  --> src/lib.rs:13:19
[INFO] [stdout]   |
[INFO] [stdout] 8 | let flattened = x.deep_flatten();
[INFO] [stdout]   |                   ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: /opt/rustwide/workdir/src/lib.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn deep_flatten(self) -> Option<T>;
[INFO] [stdout]   |        ------------ the method is available for `Option<Option<Option<Option<Option<Option<Option<Option<Option<()>>>>>>>>>` here
[INFO] [stdout]   |
[INFO] [stdout]   = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: trait `OptionDeepFlatten` which provides `deep_flatten` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]   |
[INFO] [stdout] 2 + use crate::deep_flatten::OptionDeepFlatten;
[INFO] [stdout]   |
[INFO] [stdout] help: there is a method `flatten` with a similar name
[INFO] [stdout]   |
[INFO] [stdout] 8 - let flattened = x.deep_flatten();
[INFO] [stdout] 8 + let flattened = x.flatten();
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0599.
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 8)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.22s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "d279b4a4a45fb8c26ab1582d9a5ff245ecec4edc9125c9d01a222aa34eccd9f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d279b4a4a45fb8c26ab1582d9a5ff245ecec4edc9125c9d01a222aa34eccd9f2", kill_on_drop: false }`
[INFO] [stdout] d279b4a4a45fb8c26ab1582d9a5ff245ecec4edc9125c9d01a222aa34eccd9f2
