[INFO] cloning repository https://github.com/NicholasLYang/saber
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NicholasLYang/saber" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicholasLYang%2Fsaber", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicholasLYang%2Fsaber'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 07ed24a7d7835ab42d8747db955faaccb9b90b98
[INFO] checking NicholasLYang/saber against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNicholasLYang%2Fsaber" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NicholasLYang/saber on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NicholasLYang/saber
[INFO] finished tweaking git repo https://github.com/NicholasLYang/saber
[INFO] tweaked toml for git repo https://github.com/NicholasLYang/saber written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/NicholasLYang/saber already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f419d8042b136597d5bb103472aa2c6e5ad8c302764c8fdc2bdeaf0d42e12cd8
[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" "f419d8042b136597d5bb103472aa2c6e5ad8c302764c8fdc2bdeaf0d42e12cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f419d8042b136597d5bb103472aa2c6e5ad8c302764c8fdc2bdeaf0d42e12cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f419d8042b136597d5bb103472aa2c6e5ad8c302764c8fdc2bdeaf0d42e12cd8", kill_on_drop: false }`
[INFO] [stdout] f419d8042b136597d5bb103472aa2c6e5ad8c302764c8fdc2bdeaf0d42e12cd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=forbid" "-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@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "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] 88f26ad75c5362debec8ae2c7ec20e087640aad7acfaed23b3e20145f178e5f7
[INFO] running `Command { std: "docker" "start" "-a" "88f26ad75c5362debec8ae2c7ec20e087640aad7acfaed23b3e20145f178e5f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.13
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling cc v1.0.22
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking strum v0.13.0
[INFO] [stderr]     Checking bimap v0.4.0
[INFO] [stderr]     Checking sized-chunks v0.3.1
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling im v13.0.0
[INFO] [stderr]    Compiling quote v0.6.8
[INFO] [stderr]    Compiling syn v0.15.15
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling strum_macros v0.13.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking saber v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]     --> src/parser.rs:1044:22
[INFO] [stdout]      |
[INFO] [stdout] 1044 |                 Some(TypeSig::Name(2)),
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^ expected struct `ast::Loc`, found enum `ast::TypeSig`
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected struct `ast::Loc<ast::TypeSig>`
[INFO] [stdout]                   found enum `ast::TypeSig`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]     --> src/parser.rs:1056:22
[INFO] [stdout]      |
[INFO] [stdout] 1056 |                 Some(TypeSig::Name(3)),
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^ expected struct `ast::Loc`, found enum `ast::TypeSig`
[INFO] [stdout]      |
[INFO] [stdout]      = note: expected struct `ast::Loc<ast::TypeSig>`
[INFO] [stdout]                   found enum `ast::TypeSig`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]     --> src/parser.rs:1108:37
[INFO] [stdout]      |
[INFO] [stdout] 1108 | ...                   op: Op::Minus,
[INFO] [stdout]      |                           ^^^^^^^^^ expected enum `ast::UnaryOp`, found enum `ast::Op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]     --> src/parser.rs:1137:28
[INFO] [stdout]      |
[INFO] [stdout] 1137 |                       inner: Stmt::Return(Loc {
[INFO] [stdout]      |  ____________________________^
[INFO] [stdout] 1138 | |                         location: LocationRange(Location(1, 7), Location(1, 12)),
[INFO] [stdout] 1139 | |                         inner: Expr::BinOp {
[INFO] [stdout] 1140 | |                             op: Op::Plus,
[INFO] [stdout] ...    |
[INFO] [stdout] 1151 | |                         },
[INFO] [stdout] 1152 | |                     }),
[INFO] [stdout]      | |______________________^ expected enum `ast::Expr`, found enum `ast::Stmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `saber`.
[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] warning: associated function is never used: `peek`
[INFO] [stdout]    --> src/lexer.rs:213:8
[INFO] [stdout]     |
[INFO] [stdout] 213 |     fn peek(&self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]    --> src/parser.rs:135:8
[INFO] [stdout]     |
[INFO] [stdout] 135 |     fn peek(&mut self) -> Result<(), ParseError> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "88f26ad75c5362debec8ae2c7ec20e087640aad7acfaed23b3e20145f178e5f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88f26ad75c5362debec8ae2c7ec20e087640aad7acfaed23b3e20145f178e5f7", kill_on_drop: false }`
[INFO] [stdout] 88f26ad75c5362debec8ae2c7ec20e087640aad7acfaed23b3e20145f178e5f7