Dec 19 13:03:37.714 INFO checking masami256/virtrun against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 13:03:37.714 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 13:03:38.220 INFO [stdout] 0576cec870c9056d20a2e8d1edca7ca841fbead1837973f5c7efe3ddf4d758e1
Dec 19 13:03:38.222 INFO running `"docker" "start" "-a" "0576cec870c9056d20a2e8d1edca7ca841fbead1837973f5c7efe3ddf4d758e1"`
Dec 19 13:03:40.600 INFO [stderr]    Compiling cmake v0.1.31
Dec 19 13:03:40.600 INFO [stderr]    Compiling libz-sys v1.0.18
Dec 19 13:03:40.609 INFO [stderr]     Checking ioctl-rs v0.1.6
Dec 19 13:03:40.609 INFO [stderr]     Checking serial-core v0.4.0
Dec 19 13:03:40.609 INFO [stderr]     Checking os_pipe v0.6.1
Dec 19 13:03:41.884 INFO [stderr]     Checking serial-unix v0.4.0
Dec 19 13:03:43.024 INFO [stderr]    Compiling libssh2-sys v0.2.7
Dec 19 13:03:43.192 INFO [stderr]     Checking serial v0.4.0
Dec 19 13:03:56.473 INFO [stderr]     Checking ssh2 v0.3.3
Dec 19 13:03:57.264 INFO [stderr]     Checking virtrun v0.1.0 (/opt/crater/workdir)
Dec 19 13:03:57.904 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 19 13:03:57.904 INFO [stderr]   --> src/main.rs:12:5
Dec 19 13:03:57.904 INFO [stderr]    |
Dec 19 13:03:57.904 INFO [stderr] 12 | use std::io::prelude::*;
Dec 19 13:03:57.904 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 19 13:03:57.904 INFO [stderr]    |
Dec 19 13:03:57.904 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 13:03:57.904 INFO [stderr] 
Dec 19 13:03:57.916 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 19 13:03:57.916 INFO [stderr]   --> src/main.rs:12:5
Dec 19 13:03:57.916 INFO [stderr]    |
Dec 19 13:03:57.916 INFO [stderr] 12 | use std::io::prelude::*;
Dec 19 13:03:57.916 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 19 13:03:57.916 INFO [stderr]    |
Dec 19 13:03:57.916 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 19 13:03:57.916 INFO [stderr] 
Dec 19 13:03:57.932 INFO [stderr] warning: unused variable: `i`
Dec 19 13:03:57.932 INFO [stderr]    --> src/main.rs:108:49
Dec 19 13:03:57.932 INFO [stderr]     |
Dec 19 13:03:57.932 INFO [stderr] 108 |                         yaml::Yaml::Integer(ref i) => {
Dec 19 13:03:57.932 INFO [stderr]     |                                                 ^ help: consider using `_i` instead
Dec 19 13:03:57.932 INFO [stderr]     |
Dec 19 13:03:57.932 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 13:03:57.932 INFO [stderr] 
Dec 19 13:03:57.932 INFO [stderr] warning: unused variable: `tmpfiles`
Dec 19 13:03:57.932 INFO [stderr]    --> src/main.rs:133:20
Dec 19 13:03:57.932 INFO [stderr]     |
Dec 19 13:03:57.932 INFO [stderr] 133 |     let (commands, tmpfiles) = create_cmdline_parameters(&data);
Dec 19 13:03:57.932 INFO [stderr]     |                    ^^^^^^^^ help: consider using `_tmpfiles` instead
Dec 19 13:03:57.932 INFO [stderr] 
Dec 19 13:03:57.932 INFO [stderr] warning: unused variable: `i`
Dec 19 13:03:57.932 INFO [stderr]    --> src/main.rs:108:49
Dec 19 13:03:57.932 INFO [stderr]     |
Dec 19 13:03:57.932 INFO [stderr] 108 |                         yaml::Yaml::Integer(ref i) => {
Dec 19 13:03:57.932 INFO [stderr]     |                                                 ^ help: consider using `_i` instead
Dec 19 13:03:57.932 INFO [stderr]     |
Dec 19 13:03:57.932 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 19 13:03:57.933 INFO [stderr] 
Dec 19 13:03:57.933 INFO [stderr] warning: unused variable: `tmpfiles`
Dec 19 13:03:57.933 INFO [stderr]    --> src/main.rs:133:20
Dec 19 13:03:57.933 INFO [stderr]     |
Dec 19 13:03:57.933 INFO [stderr] 133 |     let (commands, tmpfiles) = create_cmdline_parameters(&data);
Dec 19 13:03:57.933 INFO [stderr]     |                    ^^^^^^^^ help: consider using `_tmpfiles` instead
Dec 19 13:03:57.933 INFO [stderr] 
Dec 19 13:03:57.972 INFO [stderr] warning: variable does not need to be mutable
Dec 19 13:03:57.972 INFO [stderr]    --> src/main.rs:179:9
Dec 19 13:03:57.972 INFO [stderr]     |
Dec 19 13:03:57.972 INFO [stderr] 179 |     let mut qemu_args = create_qemu_args(data);
Dec 19 13:03:57.972 INFO [stderr]     |         ----^^^^^^^^^
Dec 19 13:03:57.972 INFO [stderr]     |         |
Dec 19 13:03:57.972 INFO [stderr]     |         help: remove this `mut`
Dec 19 13:03:57.972 INFO [stderr]     |
Dec 19 13:03:57.972 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 13:03:57.972 INFO [stderr] 
Dec 19 13:03:57.985 INFO [stderr] warning: variable does not need to be mutable
Dec 19 13:03:57.985 INFO [stderr]    --> src/main.rs:179:9
Dec 19 13:03:57.985 INFO [stderr]     |
Dec 19 13:03:57.985 INFO [stderr] 179 |     let mut qemu_args = create_qemu_args(data);
Dec 19 13:03:57.985 INFO [stderr]     |         ----^^^^^^^^^
Dec 19 13:03:57.985 INFO [stderr]     |         |
Dec 19 13:03:57.985 INFO [stderr]     |         help: remove this `mut`
Dec 19 13:03:57.985 INFO [stderr]     |
Dec 19 13:03:57.985 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 13:03:57.985 INFO [stderr] 
Dec 19 13:03:58.072 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.58s
Dec 19 13:03:58.710 INFO running `"docker" "inspect" "0576cec870c9056d20a2e8d1edca7ca841fbead1837973f5c7efe3ddf4d758e1"`
Dec 19 13:03:58.960 INFO running `"docker" "rm" "-f" "0576cec870c9056d20a2e8d1edca7ca841fbead1837973f5c7efe3ddf4d758e1"`
Dec 19 13:03:59.248 INFO [stdout] 0576cec870c9056d20a2e8d1edca7ca841fbead1837973f5c7efe3ddf4d758e1