[INFO] fetching crate sauron 0.10.0...
[INFO] checking sauron-0.10.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate sauron 0.10.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate sauron 0.10.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate sauron 0.10.0
[INFO] finished tweaking crates.io crate sauron 0.10.0
[INFO] tweaked toml for crates.io crate sauron 0.10.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate sauron 0.10.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dac436bd3a8224b9d8d8251a65ad98b130ee61c2c6ab0db8e6b61bf62d22907d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "dac436bd3a8224b9d8d8251a65ad98b130ee61c2c6ab0db8e6b61bf62d22907d"`
[INFO] [stderr]    Compiling syn v0.15.38
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.47
[INFO] [stderr]    Compiling bumpalo v2.4.3
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling wasm-bindgen v0.2.47
[INFO] [stderr]     Checking futures v0.1.27
[INFO] [stderr]     Checking sauron_vdom v0.10.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling backtrace v0.3.31
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.47
[INFO] [stderr]     Checking pulldown-cmark v0.5.2
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling weedle v0.9.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.47
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.47
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.47
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.47
[INFO] [stderr]     Checking js-sys v0.3.24
[INFO] [stderr]     Checking console_error_panic_hook v0.1.6
[INFO] [stderr]    Compiling web-sys v0.3.24
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.24
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.47
[INFO] [stderr]     Checking sauron v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: the feature `const_generics` is incomplete and may cause the compiler to crash
[INFO] [stderr]  --> src/lib.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(const_generics)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]  --> src/lib.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![deny(warnings)]
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   = note: `#[deny(incomplete_features)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: the feature `const_generics` is incomplete and may cause the compiler to crash
[INFO] [stderr]  --> src/lib.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(const_generics)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]  --> src/lib.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![deny(warnings)]
[INFO] [stderr]   |         ^^^^^^^^
[INFO] [stderr]   = note: `#[deny(incomplete_features)]` implied by `#[deny(warnings)]`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `sauron`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `sauron`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "dac436bd3a8224b9d8d8251a65ad98b130ee61c2c6ab0db8e6b61bf62d22907d"`
[INFO] running `"docker" "rm" "-f" "dac436bd3a8224b9d8d8251a65ad98b130ee61c2c6ab0db8e6b61bf62d22907d"`
[INFO] [stdout] dac436bd3a8224b9d8d8251a65ad98b130ee61c2c6ab0db8e6b61bf62d22907d