Dec 18 04:25:36.201 INFO checking aisamanra/rust-closure-callback against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 04:25:36.201 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-7/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 04:25:36.712 INFO [stdout] baccba69fb163920b0e417a9d8dc4ccfbc4ecf1c31637672b9cbb5fcd3c7e81a
Dec 18 04:25:36.718 INFO running `"docker" "start" "-a" "baccba69fb163920b0e417a9d8dc4ccfbc4ecf1c31637672b9cbb5fcd3c7e81a"`
Dec 18 04:25:38.269 INFO [stderr]    Compiling cb v0.1.0 (/opt/crater/workdir)
Dec 18 04:25:39.512 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 18 04:25:39.513 INFO [stderr]   --> src/main.rs:14:1
Dec 18 04:25:39.513 INFO [stderr]    |
Dec 18 04:25:39.513 INFO [stderr] 14 | extern crate libc;
Dec 18 04:25:39.513 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 18 04:25:39.513 INFO [stderr]    |
Dec 18 04:25:39.513 INFO [stderr]    = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 18 04:25:39.513 INFO [stderr] 
Dec 18 04:25:39.513 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 18 04:25:39.513 INFO [stderr]   --> src/main.rs:16:5
Dec 18 04:25:39.513 INFO [stderr]    |
Dec 18 04:25:39.513 INFO [stderr] 16 | use libc::*;
Dec 18 04:25:39.513 INFO [stderr]    |     ^^^^
Dec 18 04:25:39.513 INFO [stderr]    |
Dec 18 04:25:39.513 INFO [stderr]    = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 18 04:25:39.513 INFO [stderr] 
Dec 18 04:25:39.540 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 18 04:25:39.540 INFO [stderr]   --> src/main.rs:14:1
Dec 18 04:25:39.540 INFO [stderr]    |
Dec 18 04:25:39.540 INFO [stderr] 14 | extern crate libc;
Dec 18 04:25:39.540 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 18 04:25:39.540 INFO [stderr]    |
Dec 18 04:25:39.540 INFO [stderr]    = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 18 04:25:39.540 INFO [stderr] 
Dec 18 04:25:39.540 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 18 04:25:39.540 INFO [stderr]   --> src/main.rs:16:5
Dec 18 04:25:39.540 INFO [stderr]    |
Dec 18 04:25:39.540 INFO [stderr] 16 | use libc::*;
Dec 18 04:25:39.540 INFO [stderr]    |     ^^^^
Dec 18 04:25:39.540 INFO [stderr]    |
Dec 18 04:25:39.540 INFO [stderr]    = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 18 04:25:39.540 INFO [stderr] 
Dec 18 04:25:39.568 INFO [stderr] error: aborting due to 2 previous errors
Dec 18 04:25:39.568 INFO [stderr] 
Dec 18 04:25:39.568 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 18 04:25:39.584 INFO [stderr] error: Could not compile `cb`.
Dec 18 04:25:39.584 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 18 04:25:39.620 INFO [stderr] error: aborting due to 2 previous errors
Dec 18 04:25:39.620 INFO [stderr] 
Dec 18 04:25:39.620 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 18 04:25:39.642 INFO [stderr] error: Could not compile `cb`.
Dec 18 04:25:39.642 INFO [stderr] 
Dec 18 04:25:39.642 INFO [stderr] To learn more, run the command again with --verbose.
Dec 18 04:25:40.470 INFO running `"docker" "inspect" "baccba69fb163920b0e417a9d8dc4ccfbc4ecf1c31637672b9cbb5fcd3c7e81a"`
Dec 18 04:25:40.832 INFO running `"docker" "rm" "-f" "baccba69fb163920b0e417a9d8dc4ccfbc4ecf1c31637672b9cbb5fcd3c7e81a"`
Dec 18 04:25:41.124 INFO [stdout] baccba69fb163920b0e417a9d8dc4ccfbc4ecf1c31637672b9cbb5fcd3c7e81a