Dec 17 20:04:21.041 INFO checking masami256/virtrun against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 20:04:21.041 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 20:04:21.609 INFO [stdout] 4d94ead731ccc2dfef8bf0e9a32d733922462616ad3118e5dd2a8bacb186c0ee
Dec 17 20:04:21.611 INFO running `"docker" "start" "-a" "4d94ead731ccc2dfef8bf0e9a32d733922462616ad3118e5dd2a8bacb186c0ee"`
Dec 17 20:04:23.505 INFO [stderr]    Compiling cmake v0.1.31
Dec 17 20:04:23.516 INFO [stderr]    Compiling libz-sys v1.0.18
Dec 17 20:04:23.516 INFO [stderr]     Checking ioctl-rs v0.1.6
Dec 17 20:04:23.516 INFO [stderr]     Checking serial-core v0.4.0
Dec 17 20:04:23.524 INFO [stderr]     Checking nix v0.10.0
Dec 17 20:04:24.384 INFO [stderr]     Checking serial-unix v0.4.0
Dec 17 20:04:26.178 INFO [stderr]     Checking serial v0.4.0
Dec 17 20:04:26.408 INFO [stderr]    Compiling libssh2-sys v0.2.7
Dec 17 20:04:40.940 INFO [stderr]     Checking os_pipe v0.6.1
Dec 17 20:04:42.431 INFO [stderr]     Checking ssh2 v0.3.3
Dec 17 20:04:43.276 INFO [stderr]     Checking virtrun v0.1.0 (/opt/crater/workdir)
Dec 17 20:04:43.705 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 17 20:04:43.705 INFO [stderr]   --> src/main.rs:12:5
Dec 17 20:04:43.705 INFO [stderr]    |
Dec 17 20:04:43.705 INFO [stderr] 12 | use std::io::prelude::*;
Dec 17 20:04:43.705 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 17 20:04:43.705 INFO [stderr]    |
Dec 17 20:04:43.705 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 17 20:04:43.705 INFO [stderr] 
Dec 17 20:04:43.710 INFO [stderr] warning: unused variable: `i`
Dec 17 20:04:43.710 INFO [stderr]    --> src/main.rs:108:49
Dec 17 20:04:43.710 INFO [stderr]     |
Dec 17 20:04:43.710 INFO [stderr] 108 |                         yaml::Yaml::Integer(ref i) => {
Dec 17 20:04:43.710 INFO [stderr]     |                                                 ^ help: consider using `_i` instead
Dec 17 20:04:43.710 INFO [stderr]     |
Dec 17 20:04:43.710 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 20:04:43.710 INFO [stderr] 
Dec 17 20:04:43.711 INFO [stderr] warning: unused variable: `tmpfiles`
Dec 17 20:04:43.711 INFO [stderr]    --> src/main.rs:133:20
Dec 17 20:04:43.711 INFO [stderr]     |
Dec 17 20:04:43.711 INFO [stderr] 133 |     let (commands, tmpfiles) = create_cmdline_parameters(&data);
Dec 17 20:04:43.711 INFO [stderr]     |                    ^^^^^^^^ help: consider using `_tmpfiles` instead
Dec 17 20:04:43.711 INFO [stderr] 
Dec 17 20:04:43.740 INFO [stderr] warning: unused import: `std::io::prelude`
Dec 17 20:04:43.740 INFO [stderr]   --> src/main.rs:12:5
Dec 17 20:04:43.740 INFO [stderr]    |
Dec 17 20:04:43.740 INFO [stderr] 12 | use std::io::prelude::*;
Dec 17 20:04:43.740 INFO [stderr]    |     ^^^^^^^^^^^^^^^^
Dec 17 20:04:43.740 INFO [stderr]    |
Dec 17 20:04:43.740 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 17 20:04:43.740 INFO [stderr] 
Dec 17 20:04:43.740 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:04:43.740 INFO [stderr]    --> src/main.rs:179:9
Dec 17 20:04:43.740 INFO [stderr]     |
Dec 17 20:04:43.740 INFO [stderr] 179 |     let mut qemu_args = create_qemu_args(data);
Dec 17 20:04:43.740 INFO [stderr]     |         ----^^^^^^^^^
Dec 17 20:04:43.740 INFO [stderr]     |         |
Dec 17 20:04:43.740 INFO [stderr]     |         help: remove this `mut`
Dec 17 20:04:43.740 INFO [stderr]     |
Dec 17 20:04:43.740 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 20:04:43.740 INFO [stderr] 
Dec 17 20:04:43.752 INFO [stderr] warning: unused variable: `i`
Dec 17 20:04:43.752 INFO [stderr]    --> src/main.rs:108:49
Dec 17 20:04:43.752 INFO [stderr]     |
Dec 17 20:04:43.752 INFO [stderr] 108 |                         yaml::Yaml::Integer(ref i) => {
Dec 17 20:04:43.752 INFO [stderr]     |                                                 ^ help: consider using `_i` instead
Dec 17 20:04:43.752 INFO [stderr]     |
Dec 17 20:04:43.752 INFO [stderr]     = note: #[warn(unused_variables)] on by default
Dec 17 20:04:43.752 INFO [stderr] 
Dec 17 20:04:43.752 INFO [stderr] warning: unused variable: `tmpfiles`
Dec 17 20:04:43.752 INFO [stderr]    --> src/main.rs:133:20
Dec 17 20:04:43.752 INFO [stderr]     |
Dec 17 20:04:43.752 INFO [stderr] 133 |     let (commands, tmpfiles) = create_cmdline_parameters(&data);
Dec 17 20:04:43.752 INFO [stderr]     |                    ^^^^^^^^ help: consider using `_tmpfiles` instead
Dec 17 20:04:43.752 INFO [stderr] 
Dec 17 20:04:43.804 INFO [stderr] warning: variable does not need to be mutable
Dec 17 20:04:43.804 INFO [stderr]    --> src/main.rs:179:9
Dec 17 20:04:43.804 INFO [stderr]     |
Dec 17 20:04:43.812 INFO [stderr] 179 |     let mut qemu_args = create_qemu_args(data);
Dec 17 20:04:43.812 INFO [stderr]     |         ----^^^^^^^^^
Dec 17 20:04:43.812 INFO [stderr]     |         |
Dec 17 20:04:43.812 INFO [stderr]     |         help: remove this `mut`
Dec 17 20:04:43.812 INFO [stderr]     |
Dec 17 20:04:43.812 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 20:04:43.812 INFO [stderr] 
Dec 17 20:04:43.896 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.50s
Dec 17 20:04:45.124 INFO running `"docker" "inspect" "4d94ead731ccc2dfef8bf0e9a32d733922462616ad3118e5dd2a8bacb186c0ee"`
Dec 17 20:04:45.492 INFO running `"docker" "rm" "-f" "4d94ead731ccc2dfef8bf0e9a32d733922462616ad3118e5dd2a8bacb186c0ee"`
Dec 17 20:04:45.782 INFO [stdout] 4d94ead731ccc2dfef8bf0e9a32d733922462616ad3118e5dd2a8bacb186c0ee