Dec 12 12:35:32.149 INFO checking joinkit-0.2.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 12:35:32.149 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-7/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 12 12:35:32.580 INFO [stdout] de188b0cf166154d2bcccd50a4a207b85bb96a2b471a3b4ac9d84ef437fab155
Dec 12 12:35:32.588 INFO running `"docker" "start" "-a" "de188b0cf166154d2bcccd50a4a207b85bb96a2b471a3b4ac9d84ef437fab155"`
Dec 12 12:35:33.553 INFO [stderr] usermod: no changes
Dec 12 12:35:33.648 INFO [stderr]     Checking joinkit v0.2.0 (/source)
Dec 12 12:35:35.096 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 12:35:35.097 INFO [stderr]   --> src/lib.rs:27:1
Dec 12 12:35:35.097 INFO [stderr]    |
Dec 12 12:35:35.097 INFO [stderr] 27 | #[macro_use]
Dec 12 12:35:35.097 INFO [stderr]    | ^^^^^^^^^^^^
Dec 12 12:35:35.097 INFO [stderr]    |
Dec 12 12:35:35.097 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 12:35:35.100 INFO [stderr] 
Dec 12 12:35:35.324 INFO [stderr] warning: unused import: `itertools::Itertools`
Dec 12 12:35:35.324 INFO [stderr]  --> src/util.rs:3:5
Dec 12 12:35:35.324 INFO [stderr]   |
Dec 12 12:35:35.324 INFO [stderr] 3 | use itertools::Itertools;
Dec 12 12:35:35.324 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 12 12:35:35.324 INFO [stderr] 
Dec 12 12:35:35.324 INFO [stderr] warning: unused import: `BufRead`
Dec 12 12:35:35.324 INFO [stderr]  --> src/util.rs:5:15
Dec 12 12:35:35.324 INFO [stderr]   |
Dec 12 12:35:35.324 INFO [stderr] 5 | use std::io::{BufRead, Write, BufWriter,};
Dec 12 12:35:35.324 INFO [stderr]   |               ^^^^^^^
Dec 12 12:35:35.324 INFO [stderr] 
Dec 12 12:35:38.053 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 12:35:38.053 INFO [stderr]   --> src/lib.rs:27:1
Dec 12 12:35:38.053 INFO [stderr]    |
Dec 12 12:35:38.053 INFO [stderr] 27 | #[macro_use]
Dec 12 12:35:38.054 INFO [stderr]    | ^^^^^^^^^^^^
Dec 12 12:35:38.054 INFO [stderr]    |
Dec 12 12:35:38.054 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 12 12:35:38.054 INFO [stderr] 
Dec 12 12:35:39.620 INFO [stderr] warning: unused import: `itertools::Itertools`
Dec 12 12:35:39.620 INFO [stderr]  --> src/util.rs:3:5
Dec 12 12:35:39.620 INFO [stderr]   |
Dec 12 12:35:39.620 INFO [stderr] 3 | use itertools::Itertools;
Dec 12 12:35:39.620 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
Dec 12 12:35:39.648 INFO [stderr] 
Dec 12 12:35:39.648 INFO [stderr] warning: unused import: `BufRead`
Dec 12 12:35:39.648 INFO [stderr]  --> src/util.rs:5:15
Dec 12 12:35:39.648 INFO [stderr]   |
Dec 12 12:35:39.648 INFO [stderr] 5 | use std::io::{BufRead, Write, BufWriter,};
Dec 12 12:35:39.648 INFO [stderr]   |               ^^^^^^^
Dec 12 12:35:39.648 INFO [stderr] 
Dec 12 12:35:44.696 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.09s
Dec 12 12:35:44.708 INFO [stderr] su: No module specific data is present
Dec 12 12:35:45.524 INFO running `"docker" "inspect" "de188b0cf166154d2bcccd50a4a207b85bb96a2b471a3b4ac9d84ef437fab155"`
Dec 12 12:35:45.726 INFO running `"docker" "rm" "-f" "de188b0cf166154d2bcccd50a4a207b85bb96a2b471a3b4ac9d84ef437fab155"`
Dec 12 12:35:46.006 INFO [stdout] de188b0cf166154d2bcccd50a4a207b85bb96a2b471a3b4ac9d84ef437fab155