[INFO] fetching crate egg-stats 0.3.0...
[INFO] checking egg-stats-0.3.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate egg-stats 0.3.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate egg-stats 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate egg-stats 0.3.0
[INFO] tweaked toml for crates.io crate egg-stats 0.3.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate egg-stats 0.3.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate egg-stats 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f40a63bc2d7dcc9ddcebd667a26b940ec4308773328e563ae2557f29d4d64756
[INFO] running `Command { std: "docker" "start" "-a" "f40a63bc2d7dcc9ddcebd667a26b940ec4308773328e563ae2557f29d4d64756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f40a63bc2d7dcc9ddcebd667a26b940ec4308773328e563ae2557f29d4d64756", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f40a63bc2d7dcc9ddcebd667a26b940ec4308773328e563ae2557f29d4d64756", kill_on_drop: false }`
[INFO] [stdout] f40a63bc2d7dcc9ddcebd667a26b940ec4308773328e563ae2557f29d4d64756
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1704171a01d3f83c4fd8c00c355f0f0ea7960953a53bcf41e62850f34ded905b
[INFO] running `Command { std: "docker" "start" "-a" "1704171a01d3f83c4fd8c00c355f0f0ea7960953a53bcf41e62850f34ded905b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking env_logger v0.9.3
[INFO] [stderr]     Checking instant v0.1.13
[INFO] [stderr]     Checking symbolic_expressions v5.0.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking ahash v0.7.8
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking symbol_table v0.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]     Checking thiserror v1.0.63
[INFO] [stderr]     Checking egg v0.9.5
[INFO] [stderr]     Checking egg-stats v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<egg::Symbol, Infallible>
[INFO] [stdout]   --> examples/simple.rs:6:1
[INFO] [stdout]    |
[INFO] [stdout]  6 | / define_language! {
[INFO] [stdout]  7 | |     enum SimpleLanguage {
[INFO] [stdout]  8 | |         Num(i32),
[INFO] [stdout]  9 | |         "+" = Add([Id; 2]),
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]    = note: this error originates in the macro `$crate::__define_language` which comes from the expansion of the macro `define_language` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<egg::Symbol, Infallible>
[INFO] [stdout]   --> examples/simple.rs:6:1
[INFO] [stdout]    |
[INFO] [stdout]  6 | / define_language! {
[INFO] [stdout]  7 | |     enum SimpleLanguage {
[INFO] [stdout]  8 | |         Num(i32),
[INFO] [stdout]  9 | |         "+" = Add([Id; 2]),
[INFO] [stdout] ...  |
[INFO] [stdout] 15 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__define_language` which comes from the expansion of the macro `define_language` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `egg-stats` (example "simple") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1704171a01d3f83c4fd8c00c355f0f0ea7960953a53bcf41e62850f34ded905b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1704171a01d3f83c4fd8c00c355f0f0ea7960953a53bcf41e62850f34ded905b", kill_on_drop: false }`
[INFO] [stdout] 1704171a01d3f83c4fd8c00c355f0f0ea7960953a53bcf41e62850f34ded905b