Dec 15 23:23:35.773 INFO testing abrute-0.1.8 against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 15 23:23:35.773 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-0/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 15 23:23:36.135 INFO [stdout] 7d47be658641e452a80b28fc3e0564306e71b678c1baf81fcbb455ce434e610b
Dec 15 23:23:36.137 INFO running `"docker" "start" "-a" "7d47be658641e452a80b28fc3e0564306e71b678c1baf81fcbb455ce434e610b"`
Dec 15 23:23:37.243 INFO [stderr] usermod: no changes
Dec 15 23:23:37.492 INFO [stderr]    Compiling base_custom v0.1.13
Dec 15 23:23:37.507 INFO [stderr]    Compiling num_cpus v1.7.0
Dec 15 23:23:37.511 INFO [stderr]    Compiling textwrap v0.8.0
Dec 15 23:23:39.674 INFO [stderr]    Compiling digits v1.1.0
Dec 15 23:23:39.687 INFO [stderr]    Compiling rayon-core v1.4.1
Dec 15 23:23:39.750 INFO [stderr]    Compiling clap v2.26.2
Dec 15 23:23:43.631 INFO [stderr]    Compiling rayon v0.8.2
Dec 15 23:24:03.719 INFO [stderr]    Compiling abrute v0.1.8 (/source)
Dec 15 23:24:08.215 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 15 23:24:08.215 INFO [stderr]   --> src/main.rs:41:1
Dec 15 23:24:08.215 INFO [stderr]    |
Dec 15 23:24:08.215 INFO [stderr] 41 | extern crate libc;
Dec 15 23:24:08.215 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^
Dec 15 23:24:08.215 INFO [stderr]    |
Dec 15 23:24:08.215 INFO [stderr]    = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 15 23:24:08.215 INFO [stderr] 
Dec 15 23:24:08.215 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 15 23:24:08.215 INFO [stderr]   --> src/main.rs:42:5
Dec 15 23:24:08.215 INFO [stderr]    |
Dec 15 23:24:08.215 INFO [stderr] 42 | use libc::pthread_cancel;
Dec 15 23:24:08.215 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
Dec 15 23:24:08.215 INFO [stderr]    |
Dec 15 23:24:08.215 INFO [stderr]    = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 15 23:24:08.215 INFO [stderr] 
Dec 15 23:24:08.215 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 15 23:24:08.215 INFO [stderr]    --> src/main.rs:270:5
Dec 15 23:24:08.215 INFO [stderr]     |
Dec 15 23:24:08.215 INFO [stderr] 270 |     pthread_cancel(wr);
Dec 15 23:24:08.215 INFO [stderr]     |     ^^^^^^^^^^^^^^
Dec 15 23:24:08.215 INFO [stderr]     |
Dec 15 23:24:08.215 INFO [stderr]     = help: add #![feature(rustc_private)] to the crate attributes to enable
Dec 15 23:24:08.215 INFO [stderr] 
Dec 15 23:24:08.603 INFO [stderr] error: aborting due to 3 previous errors
Dec 15 23:24:08.603 INFO [stderr] 
Dec 15 23:24:08.603 INFO [stderr] For more information about this error, try `rustc --explain E0658`.
Dec 15 23:24:08.618 INFO [stderr] error: Could not compile `abrute`.
Dec 15 23:24:08.619 INFO [stderr] 
Dec 15 23:24:08.619 INFO [stderr] To learn more, run the command again with --verbose.
Dec 15 23:24:08.619 INFO [stderr] su: No module specific data is present
Dec 15 23:24:09.496 INFO running `"docker" "inspect" "7d47be658641e452a80b28fc3e0564306e71b678c1baf81fcbb455ce434e610b"`
Dec 15 23:24:09.731 INFO running `"docker" "rm" "-f" "7d47be658641e452a80b28fc3e0564306e71b678c1baf81fcbb455ce434e610b"`
Dec 15 23:24:10.111 INFO [stdout] 7d47be658641e452a80b28fc3e0564306e71b678c1baf81fcbb455ce434e610b