[INFO] crate flow 0.3.5 is already in cache
[INFO] checking flow-0.3.5 against beta-2019-10-27 for pr-65897
[INFO] extracting crate flow 0.3.5 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate flow 0.3.5 on toolchain beta-2019-10-27
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate flow 0.3.5
[INFO] finished tweaking crates.io crate flow 0.3.5
[INFO] tweaked toml for crates.io crate flow 0.3.5 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2019-10-27" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=allow" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-10-27" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6b5fc569c3ed277125b0a558aa9b4d7c487eea509889fe8c50f32dda8381931b
[INFO] running `"docker" "start" "-a" "6b5fc569c3ed277125b0a558aa9b4d7c487eea509889fe8c50f32dda8381931b"`
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]     Checking toml v0.2.1
[INFO] [stderr]     Checking docopt v0.6.86
[INFO] [stderr]     Checking flow v0.3.5 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0658]: use of unstable library feature 'option_result_contains'
[INFO] [stderr]   --> src/ui/input.rs:93:17
[INFO] [stderr]    |
[INFO] [stderr] 93 |         if name.contains('^') {
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/62358
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/ui/input.rs:93:26
[INFO] [stderr]    |
[INFO] [stderr] 93 |         if name.contains('^') {
[INFO] [stderr]    |                          ^^^
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          expected reference, found char
[INFO] [stderr]    |                          help: consider borrowing here: `&'^'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `&_`
[INFO] [stderr]               found type `char`
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'option_result_contains'
[INFO] [stderr]   --> src/ui/input.rs:93:17
[INFO] [stderr]    |
[INFO] [stderr] 93 |         if name.contains('^') {
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/62358
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> src/ui/input.rs:93:26
[INFO] [stderr]    |
[INFO] [stderr] 93 |         if name.contains('^') {
[INFO] [stderr]    |                          ^^^
[INFO] [stderr]    |                          |
[INFO] [stderr]    |                          expected reference, found char
[INFO] [stderr]    |                          help: consider borrowing here: `&'^'`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected type `&_`
[INFO] [stderr]               found type `char`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `chars` found for type `std::option::Option<std::string::String>` in the current scope
[INFO] [stderr]   --> src/ui/input.rs:95:40
[INFO] [stderr]    |
[INFO] [stderr] 95 |             let value = Key::Char(name.chars().last().unwrap());
[INFO] [stderr]    |                                        ^^^^^ method not found in `std::option::Option<std::string::String>`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `chars` found for type `std::option::Option<std::string::String>` in the current scope
[INFO] [stderr]   --> src/ui/input.rs:95:40
[INFO] [stderr]    |
[INFO] [stderr] 95 |             let value = Key::Char(name.chars().last().unwrap());
[INFO] [stderr]    |                                        ^^^^^ method not found in `std::option::Option<std::string::String>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `flow`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0599, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `flow`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "6b5fc569c3ed277125b0a558aa9b4d7c487eea509889fe8c50f32dda8381931b"`
[INFO] running `"docker" "rm" "-f" "6b5fc569c3ed277125b0a558aa9b4d7c487eea509889fe8c50f32dda8381931b"`
[INFO] [stdout] 6b5fc569c3ed277125b0a558aa9b4d7c487eea509889fe8c50f32dda8381931b