Dec 19 21:24:11.976 INFO checking VoxWave/Compilers2018 against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 21:24:11.976 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/VoxWave/Compilers2018:/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 21:24:12.442 INFO [stdout] 6294d9e9df17bb9725e5f3e48507b59053537402a5adbccff01c7d155dbeffa8
Dec 19 21:24:12.446 INFO running `"docker" "start" "-a" "6294d9e9df17bb9725e5f3e48507b59053537402a5adbccff01c7d155dbeffa8"`
Dec 19 21:24:13.880 INFO [stderr]     Checking char_stream v0.1.8
Dec 19 21:24:13.880 INFO [stderr]     Checking num-complex v0.1.43
Dec 19 21:24:13.880 INFO [stderr]     Checking rayon v1.0.1
Dec 19 21:24:15.835 INFO [stderr]     Checking num v0.1.42
Dec 19 21:24:18.500 INFO [stderr]     Checking minipl-compiler v0.1.0 (/opt/crater/workdir)
Dec 19 21:24:18.920 INFO [stderr] warning: unused import: `std::sync::mpsc::Sender`
Dec 19 21:24:18.920 INFO [stderr]  --> src/main.rs:7:5
Dec 19 21:24:18.920 INFO [stderr]   |
Dec 19 21:24:18.920 INFO [stderr] 7 | use std::sync::mpsc::Sender;
Dec 19 21:24:18.920 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:24:18.920 INFO [stderr]   |
Dec 19 21:24:18.920 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:24:18.920 INFO [stderr] 
Dec 19 21:24:18.920 INFO [stderr] warning: unused import: `std::sync::mpsc::Receiver`
Dec 19 21:24:18.920 INFO [stderr]  --> src/main.rs:8:5
Dec 19 21:24:18.920 INFO [stderr]   |
Dec 19 21:24:18.920 INFO [stderr] 8 | use std::sync::mpsc::Receiver;
Dec 19 21:24:18.920 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:24:18.920 INFO [stderr] 
Dec 19 21:24:18.920 INFO [stderr] warning: unused import: `std::process::abort`
Dec 19 21:24:18.920 INFO [stderr]   --> src/main.rs:10:5
Dec 19 21:24:18.920 INFO [stderr]    |
Dec 19 21:24:18.920 INFO [stderr] 10 | use std::process::abort;
Dec 19 21:24:18.920 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 21:24:18.920 INFO [stderr] 
Dec 19 21:24:19.276 INFO [stderr] warning: unreachable pattern
Dec 19 21:24:19.276 INFO [stderr]    --> src/parser/mod.rs:255:17
Dec 19 21:24:19.276 INFO [stderr]     |
Dec 19 21:24:19.276 INFO [stderr] 255 |                 _ => panic!("unexpected Token {:#?} read during", t),
Dec 19 21:24:19.276 INFO [stderr]     |                 ^
Dec 19 21:24:19.276 INFO [stderr]     |
Dec 19 21:24:19.276 INFO [stderr]     = note: #[warn(unreachable_patterns)] on by default
Dec 19 21:24:19.276 INFO [stderr] 
Dec 19 21:24:19.286 INFO [stderr] warning: unused variable: `b`
Dec 19 21:24:19.286 INFO [stderr]    --> src/interpreter.rs:207:33
Dec 19 21:24:19.286 INFO [stderr]     |
Dec 19 21:24:19.286 INFO [stderr] 207 |                     Value::Bool(b) => panic!("boolean printing is not supported"),
Dec 19 21:24:19.286 INFO [stderr]     |                                 ^ help: consider using `_b` instead
Dec 19 21:24:19.286 INFO [stderr]     |
Dec 19 21:24:19.286 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 21:24:19.286 INFO [stderr] 
Dec 19 21:24:19.286 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:24:19.286 INFO [stderr]   --> src/main.rs:29:10
Dec 19 21:24:19.286 INFO [stderr]    |
Dec 19 21:24:19.286 INFO [stderr] 29 |     let (mut kill_switch, mut kill_signal) = channel();
Dec 19 21:24:19.286 INFO [stderr]    |          ----^^^^^^^^^^^
Dec 19 21:24:19.286 INFO [stderr]    |          |
Dec 19 21:24:19.286 INFO [stderr]    |          help: remove this `mut`
Dec 19 21:24:19.286 INFO [stderr]    |
Dec 19 21:24:19.286 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 21:24:19.286 INFO [stderr] 
Dec 19 21:24:19.286 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:24:19.286 INFO [stderr]   --> src/main.rs:29:27
Dec 19 21:24:19.286 INFO [stderr]    |
Dec 19 21:24:19.286 INFO [stderr] 29 |     let (mut kill_switch, mut kill_signal) = channel();
Dec 19 21:24:19.286 INFO [stderr]    |                           ----^^^^^^^^^^^
Dec 19 21:24:19.286 INFO [stderr]    |                           |
Dec 19 21:24:19.286 INFO [stderr]    |                           help: remove this `mut`
Dec 19 21:24:19.286 INFO [stderr] 
Dec 19 21:24:19.324 INFO [stderr] warning: unused import: `std::sync::mpsc::Sender`
Dec 19 21:24:19.324 INFO [stderr]  --> src/main.rs:7:5
Dec 19 21:24:19.324 INFO [stderr]   |
Dec 19 21:24:19.324 INFO [stderr] 7 | use std::sync::mpsc::Sender;
Dec 19 21:24:19.324 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:24:19.324 INFO [stderr]   |
Dec 19 21:24:19.324 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 21:24:19.324 INFO [stderr] 
Dec 19 21:24:19.324 INFO [stderr] warning: unused import: `std::sync::mpsc::Receiver`
Dec 19 21:24:19.324 INFO [stderr]  --> src/main.rs:8:5
Dec 19 21:24:19.324 INFO [stderr]   |
Dec 19 21:24:19.324 INFO [stderr] 8 | use std::sync::mpsc::Receiver;
Dec 19 21:24:19.324 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:24:19.324 INFO [stderr] 
Dec 19 21:24:19.324 INFO [stderr] warning: unused import: `std::process::abort`
Dec 19 21:24:19.324 INFO [stderr]   --> src/main.rs:10:5
Dec 19 21:24:19.324 INFO [stderr]    |
Dec 19 21:24:19.324 INFO [stderr] 10 | use std::process::abort;
Dec 19 21:24:19.324 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 21:24:19.324 INFO [stderr] 
Dec 19 21:24:19.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:24:19.420 INFO [stderr]   --> src/main.rs:41:9
Dec 19 21:24:19.420 INFO [stderr]    |
Dec 19 21:24:19.420 INFO [stderr] 41 |         kill_switch.send(true);
Dec 19 21:24:19.420 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:24:19.420 INFO [stderr]    |
Dec 19 21:24:19.420 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:24:19.420 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:24:19.420 INFO [stderr] 
Dec 19 21:24:19.420 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:24:19.420 INFO [stderr]   --> src/main.rs:43:5
Dec 19 21:24:19.420 INFO [stderr]    |
Dec 19 21:24:19.420 INFO [stderr] 43 |     kill_signal.recv();
Dec 19 21:24:19.420 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 21:24:19.420 INFO [stderr]    |
Dec 19 21:24:19.424 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:24:19.424 INFO [stderr] 
Dec 19 21:24:19.837 INFO [stderr] warning: unreachable pattern
Dec 19 21:24:19.837 INFO [stderr]    --> src/parser/mod.rs:255:17
Dec 19 21:24:19.837 INFO [stderr]     |
Dec 19 21:24:19.837 INFO [stderr] 255 |                 _ => panic!("unexpected Token {:#?} read during", t),
Dec 19 21:24:19.837 INFO [stderr]     |                 ^
Dec 19 21:24:19.837 INFO [stderr]     |
Dec 19 21:24:19.837 INFO [stderr]     = note: #[warn(unreachable_patterns)] on by default
Dec 19 21:24:19.837 INFO [stderr] 
Dec 19 21:24:19.844 INFO [stderr] warning: unused variable: `b`
Dec 19 21:24:19.844 INFO [stderr]    --> src/interpreter.rs:207:33
Dec 19 21:24:19.844 INFO [stderr]     |
Dec 19 21:24:19.844 INFO [stderr] 207 |                     Value::Bool(b) => panic!("boolean printing is not supported"),
Dec 19 21:24:19.844 INFO [stderr]     |                                 ^ help: consider using `_b` instead
Dec 19 21:24:19.844 INFO [stderr]     |
Dec 19 21:24:19.844 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 21:24:19.844 INFO [stderr] 
Dec 19 21:24:19.852 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:24:19.852 INFO [stderr]   --> src/main.rs:29:27
Dec 19 21:24:19.852 INFO [stderr]    |
Dec 19 21:24:19.852 INFO [stderr] 29 |     let (mut kill_switch, mut kill_signal) = channel();
Dec 19 21:24:19.852 INFO [stderr]    |                           ----^^^^^^^^^^^
Dec 19 21:24:19.852 INFO [stderr]    |                           |
Dec 19 21:24:19.852 INFO [stderr]    |                           help: remove this `mut`
Dec 19 21:24:19.852 INFO [stderr]    |
Dec 19 21:24:19.852 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 21:24:19.852 INFO [stderr] 
Dec 19 21:24:19.852 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:24:19.852 INFO [stderr]   --> src/main.rs:29:10
Dec 19 21:24:19.852 INFO [stderr]    |
Dec 19 21:24:19.852 INFO [stderr] 29 |     let (mut kill_switch, mut kill_signal) = channel();
Dec 19 21:24:19.852 INFO [stderr]    |          ----^^^^^^^^^^^
Dec 19 21:24:19.852 INFO [stderr]    |          |
Dec 19 21:24:19.852 INFO [stderr]    |          help: remove this `mut`
Dec 19 21:24:19.852 INFO [stderr] 
Dec 19 21:24:19.941 INFO [stderr] warning: variable does not need to be mutable
Dec 19 21:24:19.941 INFO [stderr]   --> src/parser/test.rs:20:9
Dec 19 21:24:19.941 INFO [stderr]    |
Dec 19 21:24:19.941 INFO [stderr] 20 |     let mut expected: VecDeque<_> = vec![
Dec 19 21:24:19.941 INFO [stderr]    |         ----^^^^^^^^
Dec 19 21:24:19.941 INFO [stderr]    |         |
Dec 19 21:24:19.941 INFO [stderr]    |         help: remove this `mut`
Dec 19 21:24:19.941 INFO [stderr] 
Dec 19 21:24:19.973 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:24:19.973 INFO [stderr]   --> src/main.rs:41:9
Dec 19 21:24:19.973 INFO [stderr]    |
Dec 19 21:24:19.973 INFO [stderr] 41 |         kill_switch.send(true);
Dec 19 21:24:19.973 INFO [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 21:24:19.973 INFO [stderr]    |
Dec 19 21:24:19.973 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 21:24:19.973 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:24:19.973 INFO [stderr] 
Dec 19 21:24:19.973 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 21:24:19.973 INFO [stderr]   --> src/main.rs:43:5
Dec 19 21:24:19.973 INFO [stderr]    |
Dec 19 21:24:19.973 INFO [stderr] 43 |     kill_signal.recv();
Dec 19 21:24:19.973 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^
Dec 19 21:24:19.973 INFO [stderr]    |
Dec 19 21:24:19.973 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 21:24:19.973 INFO [stderr] 
Dec 19 21:24:20.040 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.22s
Dec 19 21:24:20.954 INFO running `"docker" "inspect" "6294d9e9df17bb9725e5f3e48507b59053537402a5adbccff01c7d155dbeffa8"`
Dec 19 21:24:21.316 INFO running `"docker" "rm" "-f" "6294d9e9df17bb9725e5f3e48507b59053537402a5adbccff01c7d155dbeffa8"`
Dec 19 21:24:21.534 INFO [stdout] 6294d9e9df17bb9725e5f3e48507b59053537402a5adbccff01c7d155dbeffa8