[INFO] fetching crate idiom-solitaire 0.1.0... [INFO] testing idiom-solitaire-0.1.0 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530 [INFO] extracting crate idiom-solitaire 0.1.0 into /workspace/builds/worker-4/source [INFO] validating manifest of crates.io crate idiom-solitaire 0.1.0 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate idiom-solitaire 0.1.0 [INFO] finished tweaking crates.io crate idiom-solitaire 0.1.0 [INFO] tweaked toml for crates.io crate idiom-solitaire 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded fixedbitset v0.4.0 [INFO] [stderr] Downloaded pathfinding v2.1.5 [INFO] [stderr] Downloaded pinyin v0.8.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 76ef825bfc8b24fa47bab2093defab7a49692944142331a343e7bb67ccec6bc6 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "76ef825bfc8b24fa47bab2093defab7a49692944142331a343e7bb67ccec6bc6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "76ef825bfc8b24fa47bab2093defab7a49692944142331a343e7bb67ccec6bc6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "76ef825bfc8b24fa47bab2093defab7a49692944142331a343e7bb67ccec6bc6", kill_on_drop: false }` [INFO] [stdout] 76ef825bfc8b24fa47bab2093defab7a49692944142331a343e7bb67ccec6bc6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] bcc30f76ba0509f29ad30013a0b0511978e2131939a47e4bf73eb337925e04b2 [INFO] running `Command { std: "docker" "start" "-a" "bcc30f76ba0509f29ad30013a0b0511978e2131939a47e4bf73eb337925e04b2", kill_on_drop: false }` [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.95 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling pinyin v0.8.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.10 [INFO] [stderr] Compiling fixedbitset v0.4.0 [INFO] [stderr] Compiling rustc-hash v1.1.0 [INFO] [stderr] Compiling syn v1.0.72 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling indexmap v1.6.2 [INFO] [stderr] Compiling csv-core v0.1.10 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling rand_pcg v0.2.1 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling pathfinding v2.1.5 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling bstr v0.2.16 [INFO] [stderr] Compiling csv v1.1.6 [INFO] [stderr] Compiling idiom-solitaire v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result` [INFO] [stdout] --> src/solver/mod.rs:96:55 [INFO] [stdout] | [INFO] [stdout] 91 | / pub fn solve_random(&mut self, input: &str) -> Result { [INFO] [stdout] 92 | | if let Some(s) = self.state.get_mut(&self.get_key(input)) { [INFO] [stdout] 93 | | if s.is_empty() { [INFO] [stdout] 94 | | return Err(SolitaireNotFound); [INFO] [stdout] 95 | | } [INFO] [stdout] 96 | | let i = (0..s.len()).choose(&mut self.rng)?; [INFO] [stdout] | | ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result` [INFO] [stdout] ... | [INFO] [stdout] 99 | | Err(SolitaireNotFound) [INFO] [stdout] 100 | | } [INFO] [stdout] | |_____- this function returns a `Result` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `std::result::Result` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result` [INFO] [stdout] --> src/solver/mod.rs:104:43 [INFO] [stdout] | [INFO] [stdout] 102 | / pub fn solve_target(&mut self, input: &str, target: &str) -> Result> { [INFO] [stdout] 103 | | let first = Idiom::from(input); [INFO] [stdout] 104 | | let target = target.chars().next()?; [INFO] [stdout] | | ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result, errors::Error>` [INFO] [stdout] 105 | | let target = match self.mode { [INFO] [stdout] ... | [INFO] [stdout] 111 | | Ok(result) [INFO] [stdout] 112 | | } [INFO] [stdout] | |_____- this function returns a `Result` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `std::result::Result, errors::Error>` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result` [INFO] [stdout] --> src/solver/mod.rs:107:54 [INFO] [stdout] | [INFO] [stdout] 102 | / pub fn solve_target(&mut self, input: &str, target: &str) -> Result> { [INFO] [stdout] 103 | | let first = Idiom::from(input); [INFO] [stdout] 104 | | let target = target.chars().next()?; [INFO] [stdout] 105 | | let target = match self.mode { [INFO] [stdout] 106 | | SolitaireMode::Character => target.to_string(), [INFO] [stdout] 107 | | SolitaireMode::Tone => target.to_pinyin()?.with_tone().to_string(), [INFO] [stdout] | | ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result, errors::Error>` [INFO] [stdout] ... | [INFO] [stdout] 111 | | Ok(result) [INFO] [stdout] 112 | | } [INFO] [stdout] | |_____- this function returns a `Result` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `std::result::Result, errors::Error>` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result` [INFO] [stdout] --> src/solver/mod.rs:108:55 [INFO] [stdout] | [INFO] [stdout] 102 | / pub fn solve_target(&mut self, input: &str, target: &str) -> Result> { [INFO] [stdout] 103 | | let first = Idiom::from(input); [INFO] [stdout] 104 | | let target = target.chars().next()?; [INFO] [stdout] 105 | | let target = match self.mode { [INFO] [stdout] ... | [INFO] [stdout] 108 | | SolitaireMode::Sound => target.to_pinyin()?.plain().to_string(), [INFO] [stdout] | | ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result, errors::Error>` [INFO] [stdout] ... | [INFO] [stdout] 111 | | Ok(result) [INFO] [stdout] 112 | | } [INFO] [stdout] | |_____- this function returns a `Result` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `std::result::Result, errors::Error>` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result` [INFO] [stdout] --> src/solver/mod.rs:110:95 [INFO] [stdout] | [INFO] [stdout] 102 | / pub fn solve_target(&mut self, input: &str, target: &str) -> Result> { [INFO] [stdout] 103 | | let first = Idiom::from(input); [INFO] [stdout] 104 | | let target = target.chars().next()?; [INFO] [stdout] 105 | | let target = match self.mode { [INFO] [stdout] ... | [INFO] [stdout] 110 | | let result = bfs(&first, |p| self.successors(p), |p| self.get_key(&p.idiom) == target)?; [INFO] [stdout] | | ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result, errors::Error>` [INFO] [stdout] 111 | | Ok(result) [INFO] [stdout] 112 | | } [INFO] [stdout] | |_____- this function returns a `Result` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `std::result::Result, errors::Error>` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result` [INFO] [stdout] --> src/solver/mod.rs:133:57 [INFO] [stdout] | [INFO] [stdout] 114 | / pub fn solve_greedy(&mut self, input: &str) -> Result { [INFO] [stdout] 115 | | let s = match self.state.get(&self.get_key(input)) { [INFO] [stdout] 116 | | Some(s) => s, [INFO] [stdout] 117 | | None => return Err(SolitaireNotFound), [INFO] [stdout] ... | [INFO] [stdout] 133 | | let s = self.state.get_mut(&self.get_key(input))?; [INFO] [stdout] | | ^ use `.ok_or(...)?` to provide an error compatible with `std::result::Result` [INFO] [stdout] 134 | | return Ok(s.swap_remove(max)); [INFO] [stdout] 135 | | } [INFO] [stdout] | |_____- this function returns a `Result` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `std::result::Result` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 6 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0277`. [INFO] [stdout] [INFO] [stderr] error: could not compile `idiom-solitaire` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `Command { std: "docker" "inspect" "bcc30f76ba0509f29ad30013a0b0511978e2131939a47e4bf73eb337925e04b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bcc30f76ba0509f29ad30013a0b0511978e2131939a47e4bf73eb337925e04b2", kill_on_drop: false }` [INFO] [stdout] bcc30f76ba0509f29ad30013a0b0511978e2131939a47e4bf73eb337925e04b2