Dec 19 13:03:25.897 INFO checking masami256/virtrun against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 13:03:25.897 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/masami256/virtrun:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 13:03:26.364 INFO [stdout] 57452a30207239be00aae0be7ce70d2486c58d3866e98e38ec462c7b9f56cf72
Dec 19 13:03:26.370 INFO running `"docker" "start" "-a" "57452a30207239be00aae0be7ce70d2486c58d3866e98e38ec462c7b9f56cf72"`
Dec 19 13:03:27.640 INFO [stderr]     Checking serial-core v0.4.0
Dec 19 13:03:27.640 INFO [stderr]     Checking ioctl-rs v0.1.6
Dec 19 13:03:27.652 INFO [stderr]     Checking nix v0.10.0
Dec 19 13:03:27.652 INFO [stderr]     Checking ssh2 v0.3.3
Dec 19 13:03:28.366 INFO [stderr]     Checking serial-unix v0.4.0
Dec 19 13:03:29.005 INFO [stderr]     Checking serial v0.4.0
Dec 19 13:03:34.466 INFO [stderr]     Checking os_pipe v0.6.1
Dec 19 13:03:34.821 INFO [stderr]     Checking virtrun v0.1.0 (/opt/crater/workdir)
Dec 19 13:03:35.276 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 19 13:03:35.277 INFO [stderr]   --> src/main.rs:12:5
Dec 19 13:03:35.277 INFO [stderr]    |
Dec 19 13:03:35.277 INFO [stderr] 12 | use std::io::prelude::*;
Dec 19 13:03:35.277 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 19 13:03:35.278 INFO [stderr]    |
Dec 19 13:03:35.278 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 13:03:35.278 INFO [stderr] 
Dec 19 13:03:35.294 INFO [stderr] warning: unused variable: `i`
Dec 19 13:03:35.294 INFO [stderr]    --> src/main.rs:108:49
Dec 19 13:03:35.294 INFO [stderr]     |
Dec 19 13:03:35.295 INFO [stderr] 108 |                         yaml::Yaml::Integer(ref i) => {
Dec 19 13:03:35.295 INFO [stderr]     |                                                 ^ help: consider using `_i` instead
Dec 19 13:03:35.295 INFO [stderr]     |
Dec 19 13:03:35.295 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 13:03:35.295 INFO [stderr] 
Dec 19 13:03:35.295 INFO [stderr] warning: unused variable: `tmpfiles`
Dec 19 13:03:35.295 INFO [stderr]    --> src/main.rs:133:20
Dec 19 13:03:35.295 INFO [stderr]     |
Dec 19 13:03:35.295 INFO [stderr] 133 |     let (commands, tmpfiles) = create_cmdline_parameters(&data);
Dec 19 13:03:35.295 INFO [stderr]     |                    ^^^^^^^^ help: consider using `_tmpfiles` instead
Dec 19 13:03:35.295 INFO [stderr] 
Dec 19 13:03:35.337 INFO [stderr] warning: variable does not need to be mutable
Dec 19 13:03:35.337 INFO [stderr]    --> src/main.rs:179:9
Dec 19 13:03:35.337 INFO [stderr]     |
Dec 19 13:03:35.337 INFO [stderr] 179 |     let mut qemu_args = create_qemu_args(data);
Dec 19 13:03:35.337 INFO [stderr]     |         ----^^^^^^^^^
Dec 19 13:03:35.337 INFO [stderr]     |         |
Dec 19 13:03:35.338 INFO [stderr]     |         help: remove this `mut`
Dec 19 13:03:35.338 INFO [stderr]     |
Dec 19 13:03:35.338 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 13:03:35.338 INFO [stderr] 
Dec 19 13:03:35.390 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 19 13:03:35.390 INFO [stderr]   --> src/main.rs:12:5
Dec 19 13:03:35.390 INFO [stderr]    |
Dec 19 13:03:35.390 INFO [stderr] 12 | use std::io::prelude::*;
Dec 19 13:03:35.390 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 19 13:03:35.390 INFO [stderr]    |
Dec 19 13:03:35.390 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 13:03:35.390 INFO [stderr] 
Dec 19 13:03:35.413 INFO [stderr] warning: unused variable: `i`
Dec 19 13:03:35.413 INFO [stderr]    --> src/main.rs:108:49
Dec 19 13:03:35.413 INFO [stderr]     |
Dec 19 13:03:35.413 INFO [stderr] 108 |                         yaml::Yaml::Integer(ref i) => {
Dec 19 13:03:35.413 INFO [stderr]     |                                                 ^ help: consider using `_i` instead
Dec 19 13:03:35.414 INFO [stderr]     |
Dec 19 13:03:35.414 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 13:03:35.414 INFO [stderr] 
Dec 19 13:03:35.414 INFO [stderr] warning: unused variable: `tmpfiles`
Dec 19 13:03:35.415 INFO [stderr]    --> src/main.rs:133:20
Dec 19 13:03:35.415 INFO [stderr]     |
Dec 19 13:03:35.415 INFO [stderr] 133 |     let (commands, tmpfiles) = create_cmdline_parameters(&data);
Dec 19 13:03:35.415 INFO [stderr]     |                    ^^^^^^^^ help: consider using `_tmpfiles` instead
Dec 19 13:03:35.416 INFO [stderr] 
Dec 19 13:03:35.472 INFO [stderr] warning: variable does not need to be mutable
Dec 19 13:03:35.473 INFO [stderr]    --> src/main.rs:179:9
Dec 19 13:03:35.473 INFO [stderr]     |
Dec 19 13:03:35.473 INFO [stderr] 179 |     let mut qemu_args = create_qemu_args(data);
Dec 19 13:03:35.473 INFO [stderr]     |         ----^^^^^^^^^
Dec 19 13:03:35.474 INFO [stderr]     |         |
Dec 19 13:03:35.474 INFO [stderr]     |         help: remove this `mut`
Dec 19 13:03:35.474 INFO [stderr]     |
Dec 19 13:03:35.474 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 13:03:35.475 INFO [stderr] 
Dec 19 13:03:35.533 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.98s
Dec 19 13:03:36.984 INFO running `"docker" "inspect" "57452a30207239be00aae0be7ce70d2486c58d3866e98e38ec462c7b9f56cf72"`
Dec 19 13:03:37.324 INFO running `"docker" "rm" "-f" "57452a30207239be00aae0be7ce70d2486c58d3866e98e38ec462c7b9f56cf72"`
Dec 19 13:03:37.640 INFO [stdout] 57452a30207239be00aae0be7ce70d2486c58d3866e98e38ec462c7b9f56cf72