Dec 11 19:59:51.382 INFO checking davidbarsky/trace-prototype against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 19:59:51.382 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-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 11 19:59:51.543 INFO [stdout] c8bfc6d8cf4f40cb9b758a7fb8b64d4c972ac3ba98480687bd4ee267ab241da9
Dec 11 19:59:51.545 INFO running `"docker" "start" "-a" "c8bfc6d8cf4f40cb9b758a7fb8b64d4c972ac3ba98480687bd4ee267ab241da9"`
Dec 11 19:59:51.979 INFO [stderr] usermod: no changes
Dec 11 19:59:52.023 INFO [stderr] warning: the cargo feature `edition` is now stable and is no longer necessary to be listed in the manifest
Dec 11 19:59:52.136 INFO [stderr]     Checking crossbeam-deque v0.5.2
Dec 11 19:59:52.136 INFO [stderr]     Checking crossbeam-channel v0.2.4
Dec 11 19:59:53.865 INFO [stderr]     Checking crossbeam v0.4.1
Dec 11 19:59:55.022 INFO [stderr]     Checking trace-prototype v0.1.0 (/source)
Dec 11 19:59:56.736 INFO [stderr] warning: unused import: `channel`
Dec 11 19:59:56.736 INFO [stderr]   --> src/main.rs:15:17
Dec 11 19:59:56.736 INFO [stderr]    |
Dec 11 19:59:56.736 INFO [stderr] 15 | use crossbeam::{channel, queue::SegQueue, Receiver, Sender};
Dec 11 19:59:56.736 INFO [stderr]    |                 ^^^^^^^
Dec 11 19:59:56.736 INFO [stderr]    |
Dec 11 19:59:56.736 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 19:59:56.736 INFO [stderr] 
Dec 11 19:59:56.952 INFO [stderr] warning: type alias is never used: `Channels`
Dec 11 19:59:56.952 INFO [stderr]   --> src/main.rs:36:1
Dec 11 19:59:56.952 INFO [stderr]    |
Dec 11 19:59:56.952 INFO [stderr] 36 | type Channels = Vec<(Sender<Span>, Receiver<Span>)>;
Dec 11 19:59:56.952 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:59:56.952 INFO [stderr]    |
Dec 11 19:59:56.952 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 19:59:56.952 INFO [stderr] 
Dec 11 19:59:56.952 INFO [stderr] warning: struct is never constructed: `Super`
Dec 11 19:59:56.952 INFO [stderr]   --> src/main.rs:37:1
Dec 11 19:59:56.952 INFO [stderr]    |
Dec 11 19:59:56.952 INFO [stderr] 37 | struct Super {
Dec 11 19:59:56.952 INFO [stderr]    | ^^^^^^^^^^^^
Dec 11 19:59:56.952 INFO [stderr] 
Dec 11 19:59:56.952 INFO [stderr] warning: method is never used: `new`
Dec 11 19:59:56.952 INFO [stderr]   --> src/main.rs:43:5
Dec 11 19:59:56.952 INFO [stderr]    |
Dec 11 19:59:56.952 INFO [stderr] 43 |     fn new(queue: SegQueue<Span>, channels: Channels) -> Self {
Dec 11 19:59:56.952 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:59:56.952 INFO [stderr] 
Dec 11 19:59:56.992 INFO [stderr] warning: unused import: `channel`
Dec 11 19:59:56.992 INFO [stderr]   --> src/main.rs:15:17
Dec 11 19:59:56.992 INFO [stderr]    |
Dec 11 19:59:56.992 INFO [stderr] 15 | use crossbeam::{channel, queue::SegQueue, Receiver, Sender};
Dec 11 19:59:56.992 INFO [stderr]    |                 ^^^^^^^
Dec 11 19:59:56.992 INFO [stderr]    |
Dec 11 19:59:56.992 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 19:59:56.992 INFO [stderr] 
Dec 11 19:59:57.092 INFO [stderr] warning: type alias is never used: `Channels`
Dec 11 19:59:57.092 INFO [stderr]   --> src/main.rs:36:1
Dec 11 19:59:57.092 INFO [stderr]    |
Dec 11 19:59:57.092 INFO [stderr] 36 | type Channels = Vec<(Sender<Span>, Receiver<Span>)>;
Dec 11 19:59:57.092 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:59:57.092 INFO [stderr]    |
Dec 11 19:59:57.092 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 11 19:59:57.092 INFO [stderr] 
Dec 11 19:59:57.092 INFO [stderr] warning: struct is never constructed: `Super`
Dec 11 19:59:57.092 INFO [stderr]   --> src/main.rs:37:1
Dec 11 19:59:57.092 INFO [stderr]    |
Dec 11 19:59:57.092 INFO [stderr] 37 | struct Super {
Dec 11 19:59:57.092 INFO [stderr]    | ^^^^^^^^^^^^
Dec 11 19:59:57.092 INFO [stderr] 
Dec 11 19:59:57.092 INFO [stderr] warning: method is never used: `new`
Dec 11 19:59:57.092 INFO [stderr]   --> src/main.rs:43:5
Dec 11 19:59:57.092 INFO [stderr]    |
Dec 11 19:59:57.092 INFO [stderr] 43 |     fn new(queue: SegQueue<Span>, channels: Channels) -> Self {
Dec 11 19:59:57.092 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 19:59:57.092 INFO [stderr] 
Dec 11 19:59:57.106 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.10s
Dec 11 19:59:57.120 INFO [stderr] su: No module specific data is present
Dec 11 19:59:58.078 INFO running `"docker" "inspect" "c8bfc6d8cf4f40cb9b758a7fb8b64d4c972ac3ba98480687bd4ee267ab241da9"`
Dec 11 19:59:58.328 INFO running `"docker" "rm" "-f" "c8bfc6d8cf4f40cb9b758a7fb8b64d4c972ac3ba98480687bd4ee267ab241da9"`
Dec 11 19:59:58.668 INFO [stdout] c8bfc6d8cf4f40cb9b758a7fb8b64d4c972ac3ba98480687bd4ee267ab241da9