[INFO] updating cached repository cloudflavor/dweller
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/cloudflavor/dweller
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/cloudflavor/dweller" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/cloudflavor/dweller"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/cloudflavor/dweller'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/cloudflavor/dweller" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/cloudflavor/dweller"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/cloudflavor/dweller'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7421338c9938f45fb81b11bc261304989d24226a
[INFO] sha for GitHub repo cloudflavor/dweller: 7421338c9938f45fb81b11bc261304989d24226a
[INFO] validating manifest of cloudflavor/dweller on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cloudflavor/dweller on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cloudflavor/dweller
[INFO] finished frobbing cloudflavor/dweller
[INFO] frobbed toml for cloudflavor/dweller written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/cloudflavor/dweller/Cargo.toml
[INFO] started frobbing cloudflavor/dweller
[INFO] finished frobbing cloudflavor/dweller
[INFO] frobbed toml for cloudflavor/dweller written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/cloudflavor/dweller/Cargo.toml
[INFO] crate cloudflavor/dweller already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking cloudflavor/dweller against master#efe2f32a6b8217425f361ec7c206910c611c03ee for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-3/master#efe2f32a6b8217425f361ec7c206910c611c03ee:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/cloudflavor/dweller:/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" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 448f636f9f5d4f479c705fe25f09a8fa35425bbe96dcff8fc28fff0911011ae4
[INFO] running `"docker" "start" "-a" "448f636f9f5d4f479c705fe25f09a8fa35425bbe96dcff8fc28fff0911011ae4"`
[INFO] [stderr]    Compiling ryu v0.2.4
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]    Compiling syn v0.15.24
[INFO] [stderr]     Checking regex v1.0.3
[INFO] [stderr]     Checking serde_json v1.0.26
[INFO] [stderr]     Checking serde-hjson v0.8.2
[INFO] [stderr]     Checking slog-json v2.3.0
[INFO] [stderr]     Checking config v0.9.2
[INFO] [stderr]    Compiling serde_derive v1.0.89
[INFO] [stderr]     Checking dweller v0.1.0-alpha (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `config`
[INFO] [stderr]   --> src/core.rs:22:18
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn bootstrap(config: Configuration) {}
[INFO] [stderr]    |                  ^^^^^^ help: consider prefixing with an underscore: `_config`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `config`
[INFO] [stderr]   --> src/core.rs:22:18
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn bootstrap(config: Configuration) {}
[INFO] [stderr]    |                  ^^^^^^ help: consider prefixing with an underscore: `_config`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Client`
[INFO] [stderr]  --> src/providers/libvirt/libvirt.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Client {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `URI` should have a snake case name
[INFO] [stderr]  --> src/providers/libvirt/libvirt.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     pub URI: String,
[INFO] [stderr]   |         ^^^ help: convert the identifier to snake case: `uri`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Client`
[INFO] [stderr]  --> src/providers/libvirt/libvirt.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Client {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `URI` should have a snake case name
[INFO] [stderr]  --> src/providers/libvirt/libvirt.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     pub URI: String,
[INFO] [stderr]   |         ^^^ help: convert the identifier to snake case: `uri`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.59s
[INFO] running `"docker" "inspect" "448f636f9f5d4f479c705fe25f09a8fa35425bbe96dcff8fc28fff0911011ae4"`
[INFO] running `"docker" "rm" "-f" "448f636f9f5d4f479c705fe25f09a8fa35425bbe96dcff8fc28fff0911011ae4"`
[INFO] [stdout] 448f636f9f5d4f479c705fe25f09a8fa35425bbe96dcff8fc28fff0911011ae4