[INFO] fetching crate rustt 0.1.2... [INFO] building rustt-0.1.2 against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1 [INFO] extracting crate rustt 0.1.2 into /workspace/builds/worker-1-tc1/source [INFO] started tweaking crates.io crate rustt 0.1.2 [INFO] finished tweaking crates.io crate rustt 0.1.2 [INFO] tweaked toml for crates.io crate rustt 0.1.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] validating manifest of crates.io crate rustt 0.1.2 on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 66 packages to latest compatible versions [INFO] [stderr] Adding criterion v0.3.6 (available: v0.7.0) [INFO] [stderr] Adding integer-encoding v1.1.7 (available: v4.0.2) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded integer-encoding v1.1.7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 304ca0dd625364cff23bff40fc6cd93a66b5062b92de7a66b0185f501e286381 [INFO] running `Command { std: "docker" "start" "-a" "304ca0dd625364cff23bff40fc6cd93a66b5062b92de7a66b0185f501e286381", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "304ca0dd625364cff23bff40fc6cd93a66b5062b92de7a66b0185f501e286381", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "304ca0dd625364cff23bff40fc6cd93a66b5062b92de7a66b0185f501e286381", kill_on_drop: false }` [INFO] [stdout] 304ca0dd625364cff23bff40fc6cd93a66b5062b92de7a66b0185f501e286381 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7f508686d7013933fde7b6c217f205f90b1faa4e8b5ddaff385b82147981ac73 [INFO] running `Command { std: "docker" "start" "-a" "7f508686d7013933fde7b6c217f205f90b1faa4e8b5ddaff385b82147981ac73", kill_on_drop: false }` [INFO] [stderr] Compiling integer-encoding v1.1.7 [INFO] [stderr] Compiling serde v1.0.228 [INFO] [stderr] Compiling rustt v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] error[E0557]: feature has been removed [INFO] [stdout] --> src/lib.rs:79:12 [INFO] [stdout] | [INFO] [stdout] 79 | #![feature(optin_builtin_traits)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ feature has been removed [INFO] [stdout] | [INFO] [stdout] = note: removed in 1.50.0; see for more information [INFO] [stdout] = note: renamed to `auto_traits` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: auto traits are experimental and possibly buggy [INFO] [stdout] --> src/ttv3/serde/mod.rs:12:1 [INFO] [stdout] | [INFO] [stdout] 12 | pub auto trait IsNotU8 {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #13231 for more information [INFO] [stdout] = help: add `#![feature(auto_traits)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-09-05; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: auto traits are experimental and possibly buggy [INFO] [stdout] --> src/ttv3/serde/mod.rs:16:1 [INFO] [stdout] | [INFO] [stdout] 16 | pub auto trait IsNotVU8 {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #13231 for more information [INFO] [stdout] = help: add `#![feature(auto_traits)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-09-05; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: auto traits are experimental and possibly buggy [INFO] [stdout] --> src/ttv3/serde/mod.rs:19:1 [INFO] [stdout] | [INFO] [stdout] 19 | pub auto trait IsNotCustom {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #13231 for more information [INFO] [stdout] = help: add `#![feature(auto_traits)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-09-05; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0658]: auto traits are experimental and possibly buggy [INFO] [stdout] --> src/ttv3/serde/mod.rs:22:1 [INFO] [stdout] | [INFO] [stdout] 22 | pub auto trait NotImplementKey {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: see issue #13231 for more information [INFO] [stdout] = help: add `#![feature(auto_traits)]` to the crate attributes to enable [INFO] [stdout] = note: this compiler was built on 2025-09-05; consider upgrading it if it is out of date [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0366]: `!IsNotVU8` impls cannot be specialized [INFO] [stdout] --> src/ttv3/serde/mod.rs:17:1 [INFO] [stdout] | [INFO] [stdout] 17 | impl !IsNotVU8 for Vec {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `u8` is not a generic parameter [INFO] [stdout] note: use the same sequence of generic lifetime, type and const parameters as the struct definition [INFO] [stdout] --> /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/alloc/src/vec/mod.rs:434:1 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0366]: `!NotImplementKey` impls cannot be specialized [INFO] [stdout] --> src/ttv3/serde/mod.rs:26:1 [INFO] [stdout] | [INFO] [stdout] 26 | impl !NotImplementKey for Vec {} [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `u8` is not a generic parameter [INFO] [stdout] note: use the same sequence of generic lifetime, type and const parameters as the struct definition [INFO] [stdout] --> /rustc/ad85bc524b1ad696e42061ad8338d382dffbdbe5/library/alloc/src/vec/mod.rs:434:1 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0366, E0557, E0658. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0366`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rustt` (lib) due to 7 previous errors [INFO] running `Command { std: "docker" "inspect" "7f508686d7013933fde7b6c217f205f90b1faa4e8b5ddaff385b82147981ac73", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f508686d7013933fde7b6c217f205f90b1faa4e8b5ddaff385b82147981ac73", kill_on_drop: false }` [INFO] [stdout] 7f508686d7013933fde7b6c217f205f90b1faa4e8b5ddaff385b82147981ac73