Dec 11 16:53:29.082 INFO checking irazorx1/markov_chain against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 16:53:29.082 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-6/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/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 16:53:29.347 INFO [stdout] 3675f7f126368ccab41accb4f120272559ab3c29a8abbb9374216943105e067f
Dec 11 16:53:29.349 INFO running `"docker" "start" "-a" "3675f7f126368ccab41accb4f120272559ab3c29a8abbb9374216943105e067f"`
Dec 11 16:53:30.280 INFO [stderr] usermod: no changes
Dec 11 16:53:30.388 INFO [stderr]     Checking markov_chain v0.1.0 (/source)
Dec 11 16:53:30.864 INFO [stderr] warning: unused import: `std::io`
Dec 11 16:53:30.864 INFO [stderr]  --> src/main.rs:6:5
Dec 11 16:53:30.864 INFO [stderr]   |
Dec 11 16:53:30.864 INFO [stderr] 6 | use std::io;
Dec 11 16:53:30.864 INFO [stderr]   |     ^^^^^^^
Dec 11 16:53:30.864 INFO [stderr]   |
Dec 11 16:53:30.864 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 16:53:30.864 INFO [stderr] 
Dec 11 16:53:30.864 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 11 16:53:30.864 INFO [stderr]  --> src/main.rs:7:5
Dec 11 16:53:30.864 INFO [stderr]   |
Dec 11 16:53:30.864 INFO [stderr] 7 | use std::io::prelude::*;
Dec 11 16:53:30.864 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 11 16:53:30.864 INFO [stderr] 
Dec 11 16:53:30.864 INFO [stderr] warning: unused import: `std::fs::File`
Dec 11 16:53:30.864 INFO [stderr]  --> src/main.rs:8:5
Dec 11 16:53:30.864 INFO [stderr]   |
Dec 11 16:53:30.864 INFO [stderr] 8 | use std::fs::File;
Dec 11 16:53:30.864 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 11 16:53:30.864 INFO [stderr] 
Dec 11 16:53:31.096 INFO [stderr] warning: the feature `fs_read_write` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 11 16:53:31.096 INFO [stderr]  --> src/main.rs:1:12
Dec 11 16:53:31.096 INFO [stderr]   |
Dec 11 16:53:31.096 INFO [stderr] 1 | #![feature(fs_read_write)]
Dec 11 16:53:31.096 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 11 16:53:31.096 INFO [stderr]   |
Dec 11 16:53:31.096 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 16:53:31.096 INFO [stderr] 
Dec 11 16:53:31.096 INFO [stderr] warning: unused import: `std::io`
Dec 11 16:53:31.096 INFO [stderr]  --> src/main.rs:6:5
Dec 11 16:53:31.096 INFO [stderr]   |
Dec 11 16:53:31.096 INFO [stderr] 6 | use std::io;
Dec 11 16:53:31.096 INFO [stderr]   |     ^^^^^^^
Dec 11 16:53:31.096 INFO [stderr]   |
Dec 11 16:53:31.096 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 16:53:31.096 INFO [stderr] 
Dec 11 16:53:31.096 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 11 16:53:31.096 INFO [stderr]  --> src/main.rs:7:5
Dec 11 16:53:31.096 INFO [stderr]   |
Dec 11 16:53:31.096 INFO [stderr] 7 | use std::io::prelude::*;
Dec 11 16:53:31.096 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 11 16:53:31.096 INFO [stderr] 
Dec 11 16:53:31.104 INFO [stderr] warning: unused import: `std::fs::File`
Dec 11 16:53:31.104 INFO [stderr]  --> src/main.rs:8:5
Dec 11 16:53:31.104 INFO [stderr]   |
Dec 11 16:53:31.104 INFO [stderr] 8 | use std::fs::File;
Dec 11 16:53:31.104 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 11 16:53:31.104 INFO [stderr] 
Dec 11 16:53:31.243 INFO [stderr] warning: the feature `fs_read_write` has been stable since 1.26.0 and no longer requires an attribute to enable
Dec 11 16:53:31.243 INFO [stderr]  --> src/main.rs:1:12
Dec 11 16:53:31.243 INFO [stderr]   |
Dec 11 16:53:31.243 INFO [stderr] 1 | #![feature(fs_read_write)]
Dec 11 16:53:31.243 INFO [stderr]   |            ^^^^^^^^^^^^^
Dec 11 16:53:31.243 INFO [stderr]   |
Dec 11 16:53:31.243 INFO [stderr]   = note: #[warn(stable_features)] on by default
Dec 11 16:53:31.243 INFO [stderr] 
Dec 11 16:53:31.292 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
Dec 11 16:53:31.300 INFO [stderr] su: No module specific data is present
Dec 11 16:53:32.478 INFO running `"docker" "inspect" "3675f7f126368ccab41accb4f120272559ab3c29a8abbb9374216943105e067f"`
Dec 11 16:53:32.763 INFO running `"docker" "rm" "-f" "3675f7f126368ccab41accb4f120272559ab3c29a8abbb9374216943105e067f"`
Dec 11 16:53:33.006 INFO [stdout] 3675f7f126368ccab41accb4f120272559ab3c29a8abbb9374216943105e067f