[INFO] fetching crate rcomb 0.7.0...
[INFO] testing rcomb-0.7.0 against 1.99.0-beta.8+cargoflags=--release for beta-release-1.100-2
[INFO] extracting crate rcomb 0.7.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rcomb 0.7.0
[INFO] finished tweaking crates.io crate rcomb 0.7.0
[INFO] tweaked toml for crates.io crate rcomb 0.7.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rcomb 0.7.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rcomb 0.7.0 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded endian-type v0.2.0
[INFO] [stderr]   Downloaded uf_rush v0.2.1
[INFO] [stderr]   Downloaded nibble_vec v0.1.0
[INFO] [stderr]   Downloaded divisors v0.2.1
[INFO] [stderr]   Downloaded kdam v0.6.4
[INFO] [stderr]   Downloaded radix_trie v0.3.0
[INFO] [stderr]   Downloaded prime-factor v0.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c
[INFO] running `Command { std: "docker" "start" "d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling memchr v2.8.3
[INFO] [stderr]    Compiling nibble_vec v0.1.0
[INFO] [stderr]    Compiling either v1.17.0
[INFO] [stderr]    Compiling endian-type v0.2.0
[INFO] [stderr]    Compiling radix_trie v0.3.0
[INFO] [stderr]    Compiling prime-factor v0.7.0
[INFO] [stderr]    Compiling itertools v0.15.0
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.46
[INFO] [stderr]    Compiling csv-core v0.1.13
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling divisors v0.2.1
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling rcomb v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 16.91s
[INFO] running `Command { std: "docker" "inspect" "d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling zerocopy v0.8.56
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling syn v3.0.3
[INFO] [stderr]    Compiling crossbeam-deque v0.8.7
[INFO] [stderr]    Compiling find-msvc-tools v0.1.10
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.20
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling cc v1.4.2
[INFO] [stderr]    Compiling regex-syntax v0.8.11
[INFO] [stderr]    Compiling clap_builder v4.6.6
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-iter v0.1.46
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling alloca v0.4.0
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling regex-automata v0.4.18
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling csv-core v0.1.13
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling page_size v0.6.0
[INFO] [stderr]    Compiling clap v4.6.6
[INFO] [stderr]    Compiling divisors v0.2.1
[INFO] [stderr]    Compiling rayon v1.12.0
[INFO] [stderr]    Compiling zerocopy-derive v0.8.56
[INFO] [stderr]    Compiling regex v1.13.1
[INFO] [stderr]    Compiling criterion-plot v0.8.2
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling rcomb v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling criterion v0.8.2
[INFO] [stdout] error[E0658]: the `!` type is experimental
[INFO] [stdout]    --> src/collections/map.rs:997:22
[INFO] [stdout]     |
[INFO] [stdout] 997 |         type Certificate = !;
[INFO] [stdout]     |                            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #35121 <https://github.com/rust-lang/rust/issues/35121> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rcomb` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c", kill_on_drop: false }`
[INFO] [stdout] d38331a28745968840e9dd6754b3de0b430a399a334a69116e177f20bc24e32c
