[INFO] fetching crate sylt-typechecker 0.1.0...
[INFO] testing sylt-typechecker-0.1.0 against try#0abe69e6c16114311cc2700e972492e64d69c28f for pr-154065-1
[INFO] extracting crate sylt-typechecker 0.1.0 into /workspace/builds/worker-2-tc2/source
[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-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sylt-typechecker 0.1.0 on toolchain 0abe69e6c16114311cc2700e972492e64d69c28f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 18 packages to latest compatible versions
[INFO] [stderr]       Adding owo-colors v2.1.0 (available: v4.3.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e3a1bca8d9793a34bc042fa494ae9c4e02c02574f7f7a9e9fae5ccdd77a2599
[INFO] running `Command { std: "docker" "start" "-a" "3e3a1bca8d9793a34bc042fa494ae9c4e02c02574f7f7a9e9fae5ccdd77a2599", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e3a1bca8d9793a34bc042fa494ae9c4e02c02574f7f7a9e9fae5ccdd77a2599", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e3a1bca8d9793a34bc042fa494ae9c4e02c02574f7f7a9e9fae5ccdd77a2599", kill_on_drop: false }`
[INFO] [stdout] 3e3a1bca8d9793a34bc042fa494ae9c4e02c02574f7f7a9e9fae5ccdd77a2599
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0abe69e6c16114311cc2700e972492e64d69c28f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 408ab9a4ee606ed97b4d852eddfd88c1ec452dea4e74478d7967e0a4cee7bb54
[INFO] running `Command { std: "docker" "start" "-a" "408ab9a4ee606ed97b4d852eddfd88c1ec452dea4e74478d7967e0a4cee7bb54", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.29
[INFO] [stderr]    Compiling beef v0.5.2
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling owo-colors v2.1.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling sylt-macro v0.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling logos-derive v0.12.1
[INFO] [stderr]    Compiling logos v0.12.1
[INFO] [stderr]    Compiling sylt-tokenizer v0.1.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling sylt-common v0.1.0
[INFO] [stderr]    Compiling sylt-typechecker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: 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: 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]     = 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: `#[deny(semicolon_in_expressions_from_macros)]` (part of `#[deny(future_incompatible)]`) on by default
[INFO] [stdout]     = note: this error originates in the macro `error` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/typechecker.rs:325:24
[INFO] [stdout]     |
[INFO] [stdout] 325 |     fn stack_from_base(&self, base: usize) -> Cow<[Value]> {
[INFO] [stdout]     |                        ^^^^^                  ^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 325 |     fn stack_from_base(&self, base: usize) -> Cow<'_, [Value]> {
[INFO] [stdout]     |                                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sylt-typechecker` (lib) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "408ab9a4ee606ed97b4d852eddfd88c1ec452dea4e74478d7967e0a4cee7bb54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408ab9a4ee606ed97b4d852eddfd88c1ec452dea4e74478d7967e0a4cee7bb54", kill_on_drop: false }`
[INFO] [stdout] 408ab9a4ee606ed97b4d852eddfd88c1ec452dea4e74478d7967e0a4cee7bb54
