Dec 18 01:39:57.429 INFO checking davidbarsky/trace-prototype against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 01:39:57.429 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-4/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/davidbarsky/trace-prototype:/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 01:39:57.842 INFO [stdout] 918d84a90d1916c5cbd098a82ba415117fde36c209d29f4d5402dfbd17908f03
Dec 18 01:39:57.846 INFO running `"docker" "start" "-a" "918d84a90d1916c5cbd098a82ba415117fde36c209d29f4d5402dfbd17908f03"`
Dec 18 01:39:59.014 INFO [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
Dec 18 01:39:59.168 INFO [stderr]     Checking crossbeam v0.4.1
Dec 18 01:39:59.935 INFO [stderr]     Checking trace-prototype v0.1.0 (/opt/crater/workdir)
Dec 18 01:40:00.692 INFO [stderr] warning: unused import: `channel`
Dec 18 01:40:00.692 INFO [stderr]   --> src/main.rs:15:17
Dec 18 01:40:00.692 INFO [stderr]    |
Dec 18 01:40:00.692 INFO [stderr] 15 | use crossbeam::{channel, queue::SegQueue, Receiver, Sender};
Dec 18 01:40:00.692 INFO [stderr]    |                 ^^^^^^^
Dec 18 01:40:00.692 INFO [stderr]    |
Dec 18 01:40:00.692 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 01:40:00.692 INFO [stderr] 
Dec 18 01:40:00.720 INFO [stderr] warning: unused import: `channel`
Dec 18 01:40:00.720 INFO [stderr]   --> src/main.rs:15:17
Dec 18 01:40:00.720 INFO [stderr]    |
Dec 18 01:40:00.720 INFO [stderr] 15 | use crossbeam::{channel, queue::SegQueue, Receiver, Sender};
Dec 18 01:40:00.720 INFO [stderr]    |                 ^^^^^^^
Dec 18 01:40:00.720 INFO [stderr]    |
Dec 18 01:40:00.720 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 01:40:00.720 INFO [stderr] 
Dec 18 01:40:00.756 INFO [stderr] warning: type alias is never used: `Channels`
Dec 18 01:40:00.756 INFO [stderr]   --> src/main.rs:36:1
Dec 18 01:40:00.756 INFO [stderr]    |
Dec 18 01:40:00.756 INFO [stderr] 36 | type Channels = Vec<(Sender<Span>, Receiver<Span>)>;
Dec 18 01:40:00.756 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:40:00.756 INFO [stderr]    |
Dec 18 01:40:00.756 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 01:40:00.756 INFO [stderr] 
Dec 18 01:40:00.756 INFO [stderr] warning: struct is never constructed: `Super`
Dec 18 01:40:00.756 INFO [stderr]   --> src/main.rs:37:1
Dec 18 01:40:00.756 INFO [stderr]    |
Dec 18 01:40:00.756 INFO [stderr] 37 | struct Super {
Dec 18 01:40:00.756 INFO [stderr]    | ^^^^^^^^^^^^
Dec 18 01:40:00.756 INFO [stderr] 
Dec 18 01:40:00.756 INFO [stderr] warning: method is never used: `new`
Dec 18 01:40:00.756 INFO [stderr]   --> src/main.rs:43:5
Dec 18 01:40:00.756 INFO [stderr]    |
Dec 18 01:40:00.756 INFO [stderr] 43 |     fn new(queue: SegQueue<Span>, channels: Channels) -> Self {
Dec 18 01:40:00.756 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:40:00.756 INFO [stderr] 
Dec 18 01:40:00.816 INFO [stderr] warning: type alias is never used: `Channels`
Dec 18 01:40:00.816 INFO [stderr]   --> src/main.rs:36:1
Dec 18 01:40:00.816 INFO [stderr]    |
Dec 18 01:40:00.816 INFO [stderr] 36 | type Channels = Vec<(Sender<Span>, Receiver<Span>)>;
Dec 18 01:40:00.816 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:40:00.816 INFO [stderr]    |
Dec 18 01:40:00.816 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 01:40:00.816 INFO [stderr] 
Dec 18 01:40:00.816 INFO [stderr] warning: struct is never constructed: `Super`
Dec 18 01:40:00.816 INFO [stderr]   --> src/main.rs:37:1
Dec 18 01:40:00.816 INFO [stderr]    |
Dec 18 01:40:00.816 INFO [stderr] 37 | struct Super {
Dec 18 01:40:00.816 INFO [stderr]    | ^^^^^^^^^^^^
Dec 18 01:40:00.816 INFO [stderr] 
Dec 18 01:40:00.816 INFO [stderr] warning: method is never used: `new`
Dec 18 01:40:00.816 INFO [stderr]   --> src/main.rs:43:5
Dec 18 01:40:00.816 INFO [stderr]    |
Dec 18 01:40:00.816 INFO [stderr] 43 |     fn new(queue: SegQueue<Span>, channels: Channels) -> Self {
Dec 18 01:40:00.816 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:40:00.816 INFO [stderr] 
Dec 18 01:40:00.836 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.85s
Dec 18 01:40:01.410 INFO running `"docker" "inspect" "918d84a90d1916c5cbd098a82ba415117fde36c209d29f4d5402dfbd17908f03"`
Dec 18 01:40:01.706 INFO running `"docker" "rm" "-f" "918d84a90d1916c5cbd098a82ba415117fde36c209d29f4d5402dfbd17908f03"`
Dec 18 01:40:01.956 INFO [stdout] 918d84a90d1916c5cbd098a82ba415117fde36c209d29f4d5402dfbd17908f03