Dec 05 00:42:30.452 INFO checking Peter-Van-Drunen/readable against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 00:42:30.452 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/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 +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-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 05 00:42:30.723 INFO [stdout] b91f68cd124d16b81942e98a2f7bdf9d99404581ced8d1833fbb7e991c52c73b
Dec 05 00:42:30.729 INFO running `"docker" "start" "-a" "b91f68cd124d16b81942e98a2f7bdf9d99404581ced8d1833fbb7e991c52c73b"`
Dec 05 00:42:31.260 INFO [stderr] usermod: no changes
Dec 05 00:42:31.282 INFO [stderr]     Checking readable v0.1.0 (/source)
Dec 05 00:42:31.640 INFO [stderr] warning: value assigned to `op_node` is never read
Dec 05 00:42:31.640 INFO [stderr]    --> src/main.rs:240:21
Dec 05 00:42:31.640 INFO [stderr]     |
Dec 05 00:42:31.640 INFO [stderr] 240 |             let mut op_node: Node = Node { t: "error_in_transformer".to_string(), val: "".to_string(), kids: Vec::new() };
Dec 05 00:42:31.640 INFO [stderr]     |                     ^^^^^^^
Dec 05 00:42:31.640 INFO [stderr]     |
Dec 05 00:42:31.640 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 05 00:42:31.640 INFO [stderr] 
Dec 05 00:42:31.661 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:42:31.661 INFO [stderr]   --> src/main.rs:25:5
Dec 05 00:42:31.661 INFO [stderr]    |
Dec 05 00:42:31.661 INFO [stderr] 25 |     in_file.read_to_string(&mut s);
Dec 05 00:42:31.661 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:42:31.661 INFO [stderr]    |
Dec 05 00:42:31.661 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 00:42:31.661 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:42:31.661 INFO [stderr] 
Dec 05 00:42:31.818 INFO [stderr] warning: value assigned to `op_node` is never read
Dec 05 00:42:31.818 INFO [stderr]    --> src/main.rs:240:21
Dec 05 00:42:31.818 INFO [stderr]     |
Dec 05 00:42:31.818 INFO [stderr] 240 |             let mut op_node: Node = Node { t: "error_in_transformer".to_string(), val: "".to_string(), kids: Vec::new() };
Dec 05 00:42:31.818 INFO [stderr]     |                     ^^^^^^^
Dec 05 00:42:31.818 INFO [stderr]     |
Dec 05 00:42:31.818 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Dec 05 00:42:31.818 INFO [stderr] 
Dec 05 00:42:31.842 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 05 00:42:31.842 INFO [stderr]   --> src/main.rs:25:5
Dec 05 00:42:31.842 INFO [stderr]    |
Dec 05 00:42:31.842 INFO [stderr] 25 |     in_file.read_to_string(&mut s);
Dec 05 00:42:31.842 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 05 00:42:31.842 INFO [stderr]    |
Dec 05 00:42:31.842 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 05 00:42:31.842 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 05 00:42:31.842 INFO [stderr] 
Dec 05 00:42:31.871 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.60s
Dec 05 00:42:31.874 INFO [stderr] su: No module specific data is present
Dec 05 00:42:32.221 INFO running `"docker" "inspect" "b91f68cd124d16b81942e98a2f7bdf9d99404581ced8d1833fbb7e991c52c73b"`
Dec 05 00:42:32.416 INFO running `"docker" "rm" "-f" "b91f68cd124d16b81942e98a2f7bdf9d99404581ced8d1833fbb7e991c52c73b"`
Dec 05 00:42:32.556 INFO [stdout] b91f68cd124d16b81942e98a2f7bdf9d99404581ced8d1833fbb7e991c52c73b