[INFO] cloning repository https://github.com/LiamOW/RustyCalculator [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LiamOW/RustyCalculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamOW%2FRustyCalculator", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamOW%2FRustyCalculator'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 161648464c208333d2d331363f63468c27cbee47 [INFO] checking LiamOW/RustyCalculator against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLiamOW%2FRustyCalculator" "/workspace/builds/worker-9/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/LiamOW/RustyCalculator on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/LiamOW/RustyCalculator [INFO] finished tweaking git repo https://github.com/LiamOW/RustyCalculator [INFO] tweaked toml for git repo https://github.com/LiamOW/RustyCalculator written to /workspace/builds/worker-9/source/Cargo.toml [INFO] crate git repo https://github.com/LiamOW/RustyCalculator already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded handlebars v1.1.0 [INFO] [stderr] Downloaded rustyline v5.0.6 [INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1a295b3ee65d2aeea3b3b52f0ab30a2e5b75b1e2650ca12629bb7c4e29a47fbe [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" "1a295b3ee65d2aeea3b3b52f0ab30a2e5b75b1e2650ca12629bb7c4e29a47fbe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1a295b3ee65d2aeea3b3b52f0ab30a2e5b75b1e2650ca12629bb7c4e29a47fbe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1a295b3ee65d2aeea3b3b52f0ab30a2e5b75b1e2650ca12629bb7c4e29a47fbe", kill_on_drop: false }` [INFO] [stdout] 1a295b3ee65d2aeea3b3b52f0ab30a2e5b75b1e2650ca12629bb7c4e29a47fbe [INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--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] f47c140bfe74ba15895d22af1ec9796541609ef921d08d7cb0a1ac0f2bf3296c [INFO] running `Command { std: "docker" "start" "-a" "f47c140bfe74ba15895d22af1ec9796541609ef921d08d7cb0a1ac0f2bf3296c", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.76 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling log v0.4.11 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Compiling yansi v0.5.0 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling proc-macro2 v1.0.19 [INFO] [stderr] Checking tinyvec v0.3.4 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Compiling opaque-debug v0.2.3 [INFO] [stderr] Compiling serde v1.0.115 [INFO] [stderr] Compiling memchr v2.3.3 [INFO] [stderr] Compiling subtle v2.2.3 [INFO] [stderr] Compiling byte-tools v0.3.1 [INFO] [stderr] Compiling matches v0.1.8 [INFO] [stderr] Compiling syn v1.0.39 [INFO] [stderr] Compiling subtle v1.0.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.9 [INFO] [stderr] Checking percent-encoding v1.0.1 [INFO] [stderr] Compiling safemem v0.3.3 [INFO] [stderr] Compiling fake-simd v0.1.2 [INFO] [stderr] Compiling zeroize v1.1.0 [INFO] [stderr] Compiling typeable v0.1.2 [INFO] [stderr] Compiling percent-encoding v2.1.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling language-tags v0.2.2 [INFO] [stderr] Compiling traitobject v0.1.0 [INFO] [stderr] Compiling base64 v0.12.3 [INFO] [stderr] Checking unic-char-range v0.7.0 [INFO] [stderr] Checking gimli v0.22.0 [INFO] [stderr] Checking unic-common v0.7.0 [INFO] [stderr] Checking regex-syntax v0.6.18 [INFO] [stderr] Checking adler v0.2.3 [INFO] [stderr] Compiling state v0.4.1 [INFO] [stderr] Compiling smallvec v1.4.2 [INFO] [stderr] Compiling serde_json v1.0.57 [INFO] [stderr] Checking object v0.20.0 [INFO] [stderr] Checking rustc-demangle v0.1.16 [INFO] [stderr] Compiling glob v0.3.0 [INFO] [stderr] Checking ucd-trie v0.1.3 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking itoa v0.4.6 [INFO] [stderr] Compiling serde_derive v1.0.115 [INFO] [stderr] Checking deunicode v0.4.3 [INFO] [stderr] Checking humansize v1.1.0 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking glob v0.2.11 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking unicode-segmentation v1.6.0 [INFO] [stderr] Checking utf8parse v0.1.1 [INFO] [stderr] Checking calculator v0.1.0 (/opt/rustwide/workdir/calculator) [INFO] [stderr] Compiling hashbrown v0.8.2 [INFO] [stderr] Compiling indexmap v1.5.2 [INFO] [stderr] Compiling num-traits v0.2.12 [INFO] [stderr] Compiling num-integer v0.1.43 [INFO] [stderr] Compiling error-chain v0.12.4 [INFO] [stderr] Compiling unicase v2.6.0 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Compiling block-padding v0.1.5 [INFO] [stdout] error[E0277]: the `?` operator can only be used in a method that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> calculator/src/parser.rs:30:19 [INFO] [stdout] | [INFO] [stdout] 28 | / pub fn new(source: &'a str) -> Result { [INFO] [stdout] 29 | | let mut lexer = Lexer::new(source); [INFO] [stdout] 30 | | let cur = lexer.next()?; [INFO] [stdout] | | ^^^^^^^^^^^^^ cannot use the `?` operator in a method that returns `Result, ParseError>` [INFO] [stdout] 31 | | let peek = lexer.next()?; [INFO] [stdout] ... | [INFO] [stdout] 37 | | }) [INFO] [stdout] 38 | | } [INFO] [stdout] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `Result, ParseError>` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in a method that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> calculator/src/parser.rs:31:20 [INFO] [stdout] | [INFO] [stdout] 28 | / pub fn new(source: &'a str) -> Result { [INFO] [stdout] 29 | | let mut lexer = Lexer::new(source); [INFO] [stdout] 30 | | let cur = lexer.next()?; [INFO] [stdout] 31 | | let peek = lexer.next()?; [INFO] [stdout] | | ^^^^^^^^^^^^^ cannot use the `?` operator in a method that returns `Result, ParseError>` [INFO] [stdout] ... | [INFO] [stdout] 37 | | }) [INFO] [stdout] 38 | | } [INFO] [stdout] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `Result, ParseError>` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0277]: the `?` operator can only be used in a method that returns `Result` or `Option` (or another type that implements `FromResidual`) [INFO] [stdout] --> calculator/src/parser.rs:43:27 [INFO] [stdout] | [INFO] [stdout] 41 | / fn next_token(&mut self) -> Result<(), ParseError> { [INFO] [stdout] 42 | | self.current_token = self.peek_token.clone(); [INFO] [stdout] 43 | | self.peek_token = self.lexer.next()?; [INFO] [stdout] | | ^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a method that returns `Result<(), ParseError>` [INFO] [stdout] 44 | | Ok(()) [INFO] [stdout] 45 | | } [INFO] [stdout] | |_____- this function should return `Result` or `Option` to accept `?` [INFO] [stdout] | [INFO] [stdout] = help: the trait `FromResidual>` is not implemented for `Result<(), ParseError>` [INFO] [stdout] = note: required by `from_residual` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 3 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 `calculator` [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "f47c140bfe74ba15895d22af1ec9796541609ef921d08d7cb0a1ac0f2bf3296c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f47c140bfe74ba15895d22af1ec9796541609ef921d08d7cb0a1ac0f2bf3296c", kill_on_drop: false }` [INFO] [stdout] f47c140bfe74ba15895d22af1ec9796541609ef921d08d7cb0a1ac0f2bf3296c