Dec 18 01:39:58.190 INFO checking davidbarsky/trace-prototype against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 01:39:58.190 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 01:39:58.632 INFO [stdout] 7b8cb8f9468d3a169bd2e2ab896a72a4c8373ff3398e5be4cad8aebe0d5b9fc0
Dec 18 01:39:58.641 INFO running `"docker" "start" "-a" "7b8cb8f9468d3a169bd2e2ab896a72a4c8373ff3398e5be4cad8aebe0d5b9fc0"`
Dec 18 01:40:00.406 INFO [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
Dec 18 01:40:00.513 INFO [stderr]     Checking crossbeam-channel v0.2.4
Dec 18 01:40:00.516 INFO [stderr]     Checking crossbeam-deque v0.5.2
Dec 18 01:40:01.617 INFO [stderr]     Checking crossbeam v0.4.1
Dec 18 01:40:02.260 INFO [stderr]     Checking trace-prototype v0.1.0 (/opt/crater/workdir)
Dec 18 01:40:02.967 INFO [stderr] warning: unused import: `channel`
Dec 18 01:40:02.972 INFO [stderr]   --> src/main.rs:15:17
Dec 18 01:40:02.972 INFO [stderr]    |
Dec 18 01:40:02.972 INFO [stderr] 15 | use crossbeam::{channel, queue::SegQueue, Receiver, Sender};
Dec 18 01:40:02.972 INFO [stderr]    |                 ^^^^^^^
Dec 18 01:40:02.972 INFO [stderr]    |
Dec 18 01:40:02.972 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 01:40:02.972 INFO [stderr] 
Dec 18 01:40:03.019 INFO [stderr] warning: unused import: `channel`
Dec 18 01:40:03.019 INFO [stderr]   --> src/main.rs:15:17
Dec 18 01:40:03.019 INFO [stderr]    |
Dec 18 01:40:03.019 INFO [stderr] 15 | use crossbeam::{channel, queue::SegQueue, Receiver, Sender};
Dec 18 01:40:03.019 INFO [stderr]    |                 ^^^^^^^
Dec 18 01:40:03.019 INFO [stderr]    |
Dec 18 01:40:03.019 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 18 01:40:03.019 INFO [stderr] 
Dec 18 01:40:03.058 INFO [stderr] warning: type alias is never used: `Channels`
Dec 18 01:40:03.058 INFO [stderr]   --> src/main.rs:36:1
Dec 18 01:40:03.058 INFO [stderr]    |
Dec 18 01:40:03.058 INFO [stderr] 36 | type Channels = Vec<(Sender<Span>, Receiver<Span>)>;
Dec 18 01:40:03.058 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:40:03.058 INFO [stderr]    |
Dec 18 01:40:03.058 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 01:40:03.058 INFO [stderr] 
Dec 18 01:40:03.058 INFO [stderr] warning: struct is never constructed: `Super`
Dec 18 01:40:03.058 INFO [stderr]   --> src/main.rs:37:1
Dec 18 01:40:03.058 INFO [stderr]    |
Dec 18 01:40:03.058 INFO [stderr] 37 | struct Super {
Dec 18 01:40:03.059 INFO [stderr]    | ^^^^^^^^^^^^
Dec 18 01:40:03.059 INFO [stderr] 
Dec 18 01:40:03.059 INFO [stderr] warning: method is never used: `new`
Dec 18 01:40:03.059 INFO [stderr]   --> src/main.rs:43:5
Dec 18 01:40:03.059 INFO [stderr]    |
Dec 18 01:40:03.059 INFO [stderr] 43 |     fn new(queue: SegQueue<Span>, channels: Channels) -> Self {
Dec 18 01:40:03.059 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:40:03.059 INFO [stderr] 
Dec 18 01:40:03.132 INFO [stderr] warning: type alias is never used: `Channels`
Dec 18 01:40:03.132 INFO [stderr]   --> src/main.rs:36:1
Dec 18 01:40:03.132 INFO [stderr]    |
Dec 18 01:40:03.132 INFO [stderr] 36 | type Channels = Vec<(Sender<Span>, Receiver<Span>)>;
Dec 18 01:40:03.132 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:40:03.132 INFO [stderr]    |
Dec 18 01:40:03.132 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 01:40:03.132 INFO [stderr] 
Dec 18 01:40:03.132 INFO [stderr] warning: struct is never constructed: `Super`
Dec 18 01:40:03.132 INFO [stderr]   --> src/main.rs:37:1
Dec 18 01:40:03.132 INFO [stderr]    |
Dec 18 01:40:03.132 INFO [stderr] 37 | struct Super {
Dec 18 01:40:03.132 INFO [stderr]    | ^^^^^^^^^^^^
Dec 18 01:40:03.132 INFO [stderr] 
Dec 18 01:40:03.132 INFO [stderr] warning: method is never used: `new`
Dec 18 01:40:03.132 INFO [stderr]   --> src/main.rs:43:5
Dec 18 01:40:03.132 INFO [stderr]    |
Dec 18 01:40:03.132 INFO [stderr] 43 |     fn new(queue: SegQueue<Span>, channels: Channels) -> Self {
Dec 18 01:40:03.132 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 01:40:03.132 INFO [stderr] 
Dec 18 01:40:03.188 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
Dec 18 01:40:03.812 INFO running `"docker" "inspect" "7b8cb8f9468d3a169bd2e2ab896a72a4c8373ff3398e5be4cad8aebe0d5b9fc0"`
Dec 18 01:40:04.086 INFO running `"docker" "rm" "-f" "7b8cb8f9468d3a169bd2e2ab896a72a4c8373ff3398e5be4cad8aebe0d5b9fc0"`
Dec 18 01:40:04.410 INFO [stdout] 7b8cb8f9468d3a169bd2e2ab896a72a4c8373ff3398e5be4cad8aebe0d5b9fc0