[INFO] cloning repository https://github.com/anima-libera/sflk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anima-libera/sflk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanima-libera%2Fsflk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanima-libera%2Fsflk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8816a71437e9060b1e8f73c88c825c8616669bc3
[INFO] checking anima-libera/sflk against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanima-libera%2Fsflk" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anima-libera/sflk on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/anima-libera/sflk
[INFO] finished tweaking git repo https://github.com/anima-libera/sflk
[INFO] tweaked toml for git repo https://github.com/anima-libera/sflk written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/anima-libera/sflk already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--no-deps" "--format-version=1", 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] 7928cbbf91cc2428254ca5eb3e7a544841e50528ad0a3686f2748942294d8423
[INFO] running `Command { std: "docker" "start" "-a" "7928cbbf91cc2428254ca5eb3e7a544841e50528ad0a3686f2748942294d8423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7928cbbf91cc2428254ca5eb3e7a544841e50528ad0a3686f2748942294d8423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7928cbbf91cc2428254ca5eb3e7a544841e50528ad0a3686f2748942294d8423", kill_on_drop: false }`
[INFO] [stdout] 7928cbbf91cc2428254ca5eb3e7a544841e50528ad0a3686f2748942294d8423
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 513d11d0d446ae3d553d835c0bae5aec0063f2956425dd1747a33bcee0e73786
[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" "513d11d0d446ae3d553d835c0bae5aec0063f2956425dd1747a33bcee0e73786", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.85
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking futures-io v0.3.12
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking sflk v0.1.0 (/opt/rustwide/workdir/sflk-lang)
[INFO] [stderr]     Checking futures-channel v0.3.12
[INFO] [stderr]     Checking futures-task v0.3.12
[INFO] [stderr]     Checking tinyvec v1.1.1
[INFO] [stdout] warning: unused import: `crate::scu::Located`
[INFO] [stdout]  --> sflk-lang/src/machine.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::scu::Located;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking memchr v2.3.4
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stdout] warning: unused import: `crate::scu::Located`
[INFO] [stdout]  --> sflk-lang/src/machine.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::scu::Located;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> sflk-lang/src/parser2.rs:48:3
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn pop(&mut self) -> Result<(Tok, Loc), ParsingError> {
[INFO] [stdout]    |                          -------------------------------- expected `Result<(tokenizer::Tok, scu::Loc), parser::ParsingError>` because of return type
[INFO] [stdout] 47 |         self.peek(0);
[INFO] [stdout] 48 |         self.toks_ahead.pop()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^ expected enum `Result`, found enum `Option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Result<(tokenizer::Tok, scu::Loc), parser::ParsingError>`
[INFO] [stdout]               found enum `Option<(tokenizer::Tok, scu::Loc)>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> sflk-lang/src/parser2.rs:48:3
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn pop(&mut self) -> Result<(Tok, Loc), ParsingError> {
[INFO] [stdout]    |                          -------------------------------- expected `Result<(tokenizer::Tok, scu::Loc), parser::ParsingError>` because of return type
[INFO] [stdout] 47 |         self.peek(0);
[INFO] [stdout] 48 |         self.toks_ahead.pop()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^ expected enum `Result`, found enum `Option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Result<(tokenizer::Tok, scu::Loc), parser::ParsingError>`
[INFO] [stdout]               found enum `Option<(tokenizer::Tok, scu::Loc)>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr] error: could not compile `sflk`
[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] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "513d11d0d446ae3d553d835c0bae5aec0063f2956425dd1747a33bcee0e73786", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "513d11d0d446ae3d553d835c0bae5aec0063f2956425dd1747a33bcee0e73786", kill_on_drop: false }`
[INFO] [stdout] 513d11d0d446ae3d553d835c0bae5aec0063f2956425dd1747a33bcee0e73786