[INFO] updating cached repository TheNeikos/rustdock
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/TheNeikos/rustdock
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/TheNeikos/rustdock" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/TheNeikos/rustdock"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/TheNeikos/rustdock'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/TheNeikos/rustdock" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/TheNeikos/rustdock"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/TheNeikos/rustdock'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bdcd606a19eac6a619d7c4aa7b9f829e545c9b9f
[INFO] sha for GitHub repo TheNeikos/rustdock: bdcd606a19eac6a619d7c4aa7b9f829e545c9b9f
[INFO] validating manifest of TheNeikos/rustdock on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of TheNeikos/rustdock on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing TheNeikos/rustdock
[INFO] finished frobbing TheNeikos/rustdock
[INFO] frobbed toml for TheNeikos/rustdock written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/TheNeikos/rustdock/Cargo.toml
[INFO] started frobbing TheNeikos/rustdock
[INFO] finished frobbing TheNeikos/rustdock
[INFO] frobbed toml for TheNeikos/rustdock written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/TheNeikos/rustdock/Cargo.toml
[INFO] crate TheNeikos/rustdock already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking TheNeikos/rustdock against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-3/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/TheNeikos/rustdock:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 228a9fa2f2c7574f897a9d262181905d9669258ea343414e7180a416dac0477c
[INFO] running `"docker" "start" "-a" "228a9fa2f2c7574f897a9d262181905d9669258ea343414e7180a416dac0477c"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling x11 v2.18.0
[INFO] [stderr]     Checking textwidth v1.1.0
[INFO] [stderr]     Checking rustdock v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Stdio` is imported redundantly
[INFO] [stderr]   --> src/main.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::process::{Command, Stdio};
[INFO] [stderr]    |                             ----- the item `Stdio` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 72 |         use std::process::Stdio;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elem`
[INFO] [stderr]    --> src/main.rs:175:18
[INFO] [stderr]     |
[INFO] [stderr] 175 |             for (elem, idx) in config.elements[last_index..].iter().zip(last_index..) {
[INFO] [stderr]     |                  ^^^^ help: consider prefixing with an underscore: `_elem`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Stdio` is imported redundantly
[INFO] [stderr]   --> src/main.rs:72:13
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::process::{Command, Stdio};
[INFO] [stderr]    |                             ----- the item `Stdio` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 72 |         use std::process::Stdio;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elem`
[INFO] [stderr]    --> src/main.rs:175:18
[INFO] [stderr]     |
[INFO] [stderr] 175 |             for (elem, idx) in config.elements[last_index..].iter().zip(last_index..) {
[INFO] [stderr]     |                  ^^^^ help: consider prefixing with an underscore: `_elem`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.79s
[INFO] running `"docker" "inspect" "228a9fa2f2c7574f897a9d262181905d9669258ea343414e7180a416dac0477c"`
[INFO] running `"docker" "rm" "-f" "228a9fa2f2c7574f897a9d262181905d9669258ea343414e7180a416dac0477c"`
[INFO] [stdout] 228a9fa2f2c7574f897a9d262181905d9669258ea343414e7180a416dac0477c