[INFO] fetching crate sylt-typechecker 0.1.0...
[INFO] checking sylt-typechecker-0.1.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate sylt-typechecker 0.1.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate sylt-typechecker 0.1.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate sylt-typechecker 0.1.0
[INFO] finished tweaking crates.io crate sylt-typechecker 0.1.0
[INFO] tweaked toml for crates.io crate sylt-typechecker 0.1.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded owo-colors v2.1.0
[INFO] [stderr]   Downloaded sylt-tokenizer v0.1.0
[INFO] [stderr]   Downloaded sylt-macro v0.1.0
[INFO] [stderr]   Downloaded sylt-common v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8f633d3024df53eaa5eec5d849014b9e489d236208b270847530b95838b9f44
[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" "c8f633d3024df53eaa5eec5d849014b9e489d236208b270847530b95838b9f44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8f633d3024df53eaa5eec5d849014b9e489d236208b270847530b95838b9f44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8f633d3024df53eaa5eec5d849014b9e489d236208b270847530b95838b9f44", kill_on_drop: false }`
[INFO] [stdout] c8f633d3024df53eaa5eec5d849014b9e489d236208b270847530b95838b9f44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c09efed2c8f0cbdba95ddf1b5eab77b0b4f725cb71fbc5415bd2e7fc2725c12b
[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" "c09efed2c8f0cbdba95ddf1b5eab77b0b4f725cb71fbc5415bd2e7fc2725c12b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling beef v0.5.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking owo-colors v2.1.0
[INFO] [stderr]    Compiling logos-derive v0.12.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling sylt-macro v0.1.0
[INFO] [stderr]     Checking logos v0.12.0
[INFO] [stderr]     Checking sylt-tokenizer v0.1.0
[INFO] [stderr]     Checking sylt-common v0.1.0
[INFO] [stderr]     Checking sylt-typechecker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/typechecker.rs:11:46
[INFO] [stdout]     |
[INFO] [stdout] 11  |         return Err($thing.error($kind, None));
[INFO] [stdout]     |                                              ^
[INFO] [stdout] ...
[INFO] [stdout] 823 |                     error!(self, RuntimeError::TypeError(op, vec![a.into()]))
[INFO] [stdout]     |                     --------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `error`
[INFO] [stdout]     = note: this warning originates in the macro `error` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/typechecker.rs:11:46
[INFO] [stdout]     |
[INFO] [stdout] 11  |         return Err($thing.error($kind, None));
[INFO] [stdout]     |                                              ^
[INFO] [stdout] ...
[INFO] [stdout] 823 |                     error!(self, RuntimeError::TypeError(op, vec![a.into()]))
[INFO] [stdout]     |                     --------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `error`
[INFO] [stdout]     = note: this warning originates in the macro `error` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.85s
[INFO] running `Command { std: "docker" "inspect" "c09efed2c8f0cbdba95ddf1b5eab77b0b4f725cb71fbc5415bd2e7fc2725c12b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c09efed2c8f0cbdba95ddf1b5eab77b0b4f725cb71fbc5415bd2e7fc2725c12b", kill_on_drop: false }`
[INFO] [stdout] c09efed2c8f0cbdba95ddf1b5eab77b0b4f725cb71fbc5415bd2e7fc2725c12b