[INFO] fetching crate number_easing 0.1.1...
[INFO] checking number_easing-0.1.1 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate number_easing 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate number_easing 0.1.1 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate number_easing 0.1.1
[INFO] finished tweaking crates.io crate number_easing 0.1.1
[INFO] tweaked toml for crates.io crate number_easing 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 49ddf61b8be520015dbcfe6b185d3d2f9ccba88be1b45eaf67a3ca4f5f050abd
[INFO] running `"docker" "start" "-a" "49ddf61b8be520015dbcfe6b185d3d2f9ccba88be1b45eaf67a3ca4f5f050abd"`
[INFO] [stderr]     Checking number_traits v0.2.4
[INFO] [stderr] error[E0635]: unknown feature `u128`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/number_traits-0.2.4/src/lib.rs:4:34
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(u128_type, i128_type, u128, i128)]
[INFO] [stderr]   |                                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0635]: unknown feature `u128_type`
[INFO] [stderr]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/number_traits-0.2.4/src/lib.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(u128_type, i128_type, u128, i128)]
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0635`.
[INFO] [stderr] error: could not compile `number_traits`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "49ddf61b8be520015dbcfe6b185d3d2f9ccba88be1b45eaf67a3ca4f5f050abd"`
[INFO] running `"docker" "rm" "-f" "49ddf61b8be520015dbcfe6b185d3d2f9ccba88be1b45eaf67a3ca4f5f050abd"`
[INFO] [stdout] 49ddf61b8be520015dbcfe6b185d3d2f9ccba88be1b45eaf67a3ca4f5f050abd