[INFO] fetching crate muchin 0.1.0...
[INFO] checking muchin-0.1.0 against 1.95.0 for pr-155915
[INFO] extracting crate muchin 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate muchin 0.1.0
[INFO] finished tweaking crates.io crate muchin 0.1.0
[INFO] tweaked toml for crates.io crate muchin 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate muchin 0.1.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate muchin 0.1.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded muchin_model_state_derive v0.1.0
[INFO] [stderr]   Downloaded type-uuid v0.1.2
[INFO] [stderr]   Downloaded rand_core v0.9.0
[INFO] [stderr]   Downloaded linkme v0.3.31
[INFO] [stderr]   Downloaded linkme-impl v0.3.31
[INFO] [stderr]   Downloaded type-uuid-derive v0.1.2
[INFO] [stderr]   Downloaded uuid v1.13.1
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.17
[INFO] [stderr]   Downloaded zerocopy v0.8.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f54f9abdcc7ff4f442f27bc142b96dbf353777136e4f2662b87fd64cc72c961e
[INFO] running `Command { std: "docker" "start" "-a" "f54f9abdcc7ff4f442f27bc142b96dbf353777136e4f2662b87fd64cc72c961e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f54f9abdcc7ff4f442f27bc142b96dbf353777136e4f2662b87fd64cc72c961e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f54f9abdcc7ff4f442f27bc142b96dbf353777136e4f2662b87fd64cc72c961e", kill_on_drop: false }`
[INFO] [stdout] f54f9abdcc7ff4f442f27bc142b96dbf353777136e4f2662b87fd64cc72c961e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb1d2f6a33f721f81b11f22a05c2c16c9c7e1ffeef2a560806b76acd9784ce9a
[INFO] running `Command { std: "docker" "start" "-a" "eb1d2f6a33f721f81b11f22a05c2c16c9c7e1ffeef2a560806b76acd9784ce9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.3.1
[INFO] [stderr]    Compiling zerocopy v0.8.17
[INFO] [stderr]    Compiling linkme-impl v0.3.31
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]    Compiling syn v2.0.98
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking anstream v0.6.18
[INFO] [stderr]     Checking mio v1.0.3
[INFO] [stderr]    Compiling uuid v1.13.1
[INFO] [stderr]     Checking rand_core v0.9.0
[INFO] [stderr]    Compiling type-uuid-derive v0.1.2
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling muchin_model_state_derive v0.1.0
[INFO] [stderr]    Compiling gensym v0.1.1
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking type-uuid v0.1.2
[INFO] [stderr]     Checking env_filter v0.1.3
[INFO] [stderr]     Checking env_logger v0.11.6
[INFO] [stderr]     Checking linkme v0.3.31
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.9.0
[INFO] [stderr]     Checking rand v0.9.0
[INFO] [stderr]     Checking serde v1.0.217
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking muchin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_const_exprs)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_const_exprs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_const_exprs)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generic_const_exprs)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `muchin` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `muchin` (lib test) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "eb1d2f6a33f721f81b11f22a05c2c16c9c7e1ffeef2a560806b76acd9784ce9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb1d2f6a33f721f81b11f22a05c2c16c9c7e1ffeef2a560806b76acd9784ce9a", kill_on_drop: false }`
[INFO] [stdout] eb1d2f6a33f721f81b11f22a05c2c16c9c7e1ffeef2a560806b76acd9784ce9a
