Dec 02 07:40:26.692 INFO testing FredericDesgreniers/rand_field against 1.30.1 for beta-1.31-5
Dec 02 07:40:26.692 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.31-5/worker-4/1.30.1:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/beta-1.31-5/1.30.1:/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 +1.30.1 build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 02 07:40:27.153 INFO [stdout] a753f64e2666bb87cf1cb4c82f5b42b815f4352e1b792a5a5e4d93c2abbe94ff
Dec 02 07:40:27.157 INFO running `"docker" "start" "-a" "a753f64e2666bb87cf1cb4c82f5b42b815f4352e1b792a5a5e4d93c2abbe94ff"`
Dec 02 07:40:28.126 INFO [stderr] usermod: no changes
Dec 02 07:40:28.243 INFO [stderr]    Compiling rand v0.5.4
Dec 02 07:40:28.243 INFO [stderr]    Compiling syn v0.14.7
Dec 02 07:40:33.483 INFO [stderr]    Compiling rand_field v0.1.0 (/source/rand_field)
Dec 02 07:40:34.215 INFO [stderr] warning: unused import: `rand::Rng`
Dec 02 07:40:34.215 INFO [stderr]  --> rand_field/src/lib.rs:2:5
Dec 02 07:40:34.215 INFO [stderr]   |
Dec 02 07:40:34.215 INFO [stderr] 2 | use rand::Rng;
Dec 02 07:40:34.215 INFO [stderr]   |     ^^^^^^^^^
Dec 02 07:40:34.215 INFO [stderr]   |
Dec 02 07:40:34.215 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 02 07:40:34.215 INFO [stderr] 
Dec 02 07:40:41.671 INFO [stderr]    Compiling rand_field_derive v0.1.0 (/source/rand_field_derive)
Dec 02 07:40:44.799 INFO [stderr] warning: unused import: `Field`
Dec 02 07:40:44.799 INFO [stderr]   --> rand_field_derive/src/lib.rs:11:17
Dec 02 07:40:44.799 INFO [stderr]    |
Dec 02 07:40:44.799 INFO [stderr] 11 | use syn::{Data, Field, Fields, Type};
Dec 02 07:40:44.799 INFO [stderr]    |                 ^^^^^
Dec 02 07:40:44.799 INFO [stderr]    |
Dec 02 07:40:44.799 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 02 07:40:44.799 INFO [stderr] 
Dec 02 07:40:44.799 INFO [stderr] warning: unused import: `proc_macro2::Punct`
Dec 02 07:40:44.799 INFO [stderr]   --> rand_field_derive/src/lib.rs:12:5
Dec 02 07:40:44.799 INFO [stderr]    |
Dec 02 07:40:44.799 INFO [stderr] 12 | use proc_macro2::Punct;
Dec 02 07:40:44.799 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^
Dec 02 07:40:44.799 INFO [stderr] 
Dec 02 07:40:44.898 INFO [stderr] warning: unused variable: `index`
Dec 02 07:40:44.898 INFO [stderr]   --> rand_field_derive/src/lib.rs:85:13
Dec 02 07:40:44.898 INFO [stderr]    |
Dec 02 07:40:44.898 INFO [stderr] 85 |         let index = rand::thread_rng().gen_range(0, choices.len());
Dec 02 07:40:44.898 INFO [stderr]    |             ^^^^^ help: consider using `_index` instead
Dec 02 07:40:44.898 INFO [stderr]    |
Dec 02 07:40:44.898 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 02 07:40:44.898 INFO [stderr] 
Dec 02 07:40:45.967 INFO [stderr]    Compiling RandField v0.1.0 (/source)
Dec 02 07:40:46.595 INFO [stderr] error[E0554]: #![feature] may not be used on the stable release channel
Dec 02 07:40:46.595 INFO [stderr]  --> src/main.rs:1:1
Dec 02 07:40:46.595 INFO [stderr]   |
Dec 02 07:40:46.595 INFO [stderr] 1 | #![feature(attr_literals)]
Dec 02 07:40:46.595 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 02 07:40:46.595 INFO [stderr] 
Dec 02 07:40:46.595 INFO [stderr] error: aborting due to previous error
Dec 02 07:40:46.595 INFO [stderr] 
Dec 02 07:40:46.595 INFO [stderr] For more information about this error, try `rustc --explain E0554`.
Dec 02 07:40:46.596 INFO [stderr] error: Could not compile `RandField`.
Dec 02 07:40:46.596 INFO [stderr] 
Dec 02 07:40:46.596 INFO [stderr] To learn more, run the command again with --verbose.
Dec 02 07:40:46.596 INFO [stderr] su: No module specific data is present
Dec 02 07:40:47.780 INFO running `"docker" "inspect" "a753f64e2666bb87cf1cb4c82f5b42b815f4352e1b792a5a5e4d93c2abbe94ff"`
Dec 02 07:40:48.053 INFO running `"docker" "rm" "-f" "a753f64e2666bb87cf1cb4c82f5b42b815f4352e1b792a5a5e4d93c2abbe94ff"`
Dec 02 07:40:48.371 INFO [stdout] a753f64e2666bb87cf1cb4c82f5b42b815f4352e1b792a5a5e4d93c2abbe94ff