Dec 19 20:54:24.004 INFO checking aisamanra/rust-closure-callback against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 20:54:24.005 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-3/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/aisamanra/rust-closure-callback:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 20:54:24.516 INFO [stdout] 8f00eadc783f0da987020471d4cbb7b74f09fd53d040ec54d9d98fce7ba65fce
Dec 19 20:54:24.524 INFO running `"docker" "start" "-a" "8f00eadc783f0da987020471d4cbb7b74f09fd53d040ec54d9d98fce7ba65fce"`
Dec 19 20:54:25.726 INFO [stderr]    Compiling cb v0.1.0 (/opt/crater/workdir)
Dec 19 20:54:26.844 INFO [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead? (see issue #27812)
Dec 19 20:54:26.844 INFO [stderr]   --> src/main.rs:14:1
Dec 19 20:54:26.844 INFO [stderr]    |
Dec 19 20:54:26.844 INFO [stderr] 14 | extern crate libc;
Dec 19 20:54:26.844 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 19 20:54:26.844 INFO [stderr]    |
Dec 19 20:54:26.844 INFO [stderr]    = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 19 20:54:26.844 INFO [stderr] 
Dec 19 20:54:26.850 INFO [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead? (see issue #27812)
Dec 19 20:54:26.850 INFO [stderr]   --> src/main.rs:16:5
Dec 19 20:54:26.850 INFO [stderr]    |
Dec 19 20:54:26.850 INFO [stderr] 16 | use libc::*;
Dec 19 20:54:26.850 INFO [stderr]    |     ^^^^
Dec 19 20:54:26.850 INFO [stderr]    |
Dec 19 20:54:26.850 INFO [stderr]    = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 19 20:54:26.850 INFO [stderr] 
Dec 19 20:54:26.872 INFO [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead? (see issue #27812)
Dec 19 20:54:26.872 INFO [stderr]   --> src/main.rs:14:1
Dec 19 20:54:26.872 INFO [stderr]    |
Dec 19 20:54:26.872 INFO [stderr] 14 | extern crate libc;
Dec 19 20:54:26.872 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 19 20:54:26.872 INFO [stderr]    |
Dec 19 20:54:26.872 INFO [stderr]    = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 19 20:54:26.872 INFO [stderr] 
Dec 19 20:54:26.872 INFO [stderr] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead? (see issue #27812)
Dec 19 20:54:26.872 INFO [stderr]   --> src/main.rs:16:5
Dec 19 20:54:26.872 INFO [stderr]    |
Dec 19 20:54:26.872 INFO [stderr] 16 | use libc::*;
Dec 19 20:54:26.872 INFO [stderr]    |     ^^^^
Dec 19 20:54:26.872 INFO [stderr]    |
Dec 19 20:54:26.872 INFO [stderr]    = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 19 20:54:26.884 INFO [stderr] 
Dec 19 20:54:26.908 INFO [stderr] error: aborting due to 2 previous errors
Dec 19 20:54:26.908 INFO [stderr] 
Dec 19 20:54:26.908 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 19 20:54:26.915 INFO [stderr] error: Could not compile `cb`.
Dec 19 20:54:26.915 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 20:54:26.931 INFO [stderr] error: aborting due to 2 previous errors
Dec 19 20:54:26.931 INFO [stderr] 
Dec 19 20:54:26.931 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 19 20:54:26.936 INFO [stderr] error: Could not compile `cb`.
Dec 19 20:54:26.936 INFO [stderr] 
Dec 19 20:54:26.936 INFO [stderr] To learn more, run the command again with --verbose.
Dec 19 20:54:27.535 INFO running `"docker" "inspect" "8f00eadc783f0da987020471d4cbb7b74f09fd53d040ec54d9d98fce7ba65fce"`
Dec 19 20:54:27.825 INFO running `"docker" "rm" "-f" "8f00eadc783f0da987020471d4cbb7b74f09fd53d040ec54d9d98fce7ba65fce"`
Dec 19 20:54:28.011 INFO [stdout] 8f00eadc783f0da987020471d4cbb7b74f09fd53d040ec54d9d98fce7ba65fce