[INFO] updating cached repository kkweon/questionnaire
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kkweon/questionnaire
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kkweon/questionnaire" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/kkweon/questionnaire"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/kkweon/questionnaire'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kkweon/questionnaire" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/kkweon/questionnaire"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/kkweon/questionnaire'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 262338c0ccfca4fa92126f05280bd18d839fecfc
[INFO] sha for GitHub repo kkweon/questionnaire: 262338c0ccfca4fa92126f05280bd18d839fecfc
[INFO] validating manifest of kkweon/questionnaire on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kkweon/questionnaire on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kkweon/questionnaire
[INFO] finished frobbing kkweon/questionnaire
[INFO] frobbed toml for kkweon/questionnaire written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/kkweon/questionnaire/Cargo.toml
[INFO] started frobbing kkweon/questionnaire
[INFO] finished frobbing kkweon/questionnaire
[INFO] frobbed toml for kkweon/questionnaire written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/kkweon/questionnaire/Cargo.toml
[INFO] crate kkweon/questionnaire already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking kkweon/questionnaire against master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-4/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/kkweon/questionnaire:/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" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 49dcb449a1069640808df5ac4fa1cc39820dc0bf1eaf88cef1a6c1b39bb9e599
[INFO] running `"docker" "start" "-a" "49dcb449a1069640808df5ac4fa1cc39820dc0bf1eaf88cef1a6c1b39bb9e599"`
[INFO] [stderr]     Checking questionnaire v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:5:5
[INFO] [stderr]    |
[INFO] [stderr] 5  | /     prompt("What is your name")
[INFO] [stderr] 6  | |         .and_then(|name| {
[INFO] [stderr] 7  | |             println!("Ho your name is {}", name);
[INFO] [stderr] 8  | |             ok(())
[INFO] [stderr] 9  | |         })
[INFO] [stderr] 10 | |         .wait();
[INFO] [stderr]    | |________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:5:5
[INFO] [stderr]    |
[INFO] [stderr] 5  | /     prompt("What is your name")
[INFO] [stderr] 6  | |         .and_then(|name| {
[INFO] [stderr] 7  | |             println!("Ho your name is {}", name);
[INFO] [stderr] 8  | |             ok(())
[INFO] [stderr] 9  | |         })
[INFO] [stderr] 10 | |         .wait();
[INFO] [stderr]    | |________________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `"docker" "inspect" "49dcb449a1069640808df5ac4fa1cc39820dc0bf1eaf88cef1a6c1b39bb9e599"`
[INFO] running `"docker" "rm" "-f" "49dcb449a1069640808df5ac4fa1cc39820dc0bf1eaf88cef1a6c1b39bb9e599"`
[INFO] [stdout] 49dcb449a1069640808df5ac4fa1cc39820dc0bf1eaf88cef1a6c1b39bb9e599