[INFO] updating cached repository kigawas/examples-in-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kigawas/examples-in-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kigawas/examples-in-rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/kigawas/examples-in-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/kigawas/examples-in-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kigawas/examples-in-rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kigawas/examples-in-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kigawas/examples-in-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bc0ce30ca9ac369134ece5875ff23d60edc51da7
[INFO] sha for GitHub repo kigawas/examples-in-rust: bc0ce30ca9ac369134ece5875ff23d60edc51da7
[INFO] validating manifest of kigawas/examples-in-rust on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kigawas/examples-in-rust on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kigawas/examples-in-rust
[INFO] finished frobbing kigawas/examples-in-rust
[INFO] frobbed toml for kigawas/examples-in-rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/kigawas/examples-in-rust/Cargo.toml
[INFO] started frobbing kigawas/examples-in-rust
[INFO] finished frobbing kigawas/examples-in-rust
[INFO] frobbed toml for kigawas/examples-in-rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/kigawas/examples-in-rust/Cargo.toml
[INFO] crate kigawas/examples-in-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kigawas/examples-in-rust against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kigawas/examples-in-rust:/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=warn" "-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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] ed2f46e150f60a686a741ead8a6ed49cb8c9a0a1017ab5fd61e426cdaa1b2983
[INFO] running `"docker" "start" "-a" "ed2f46e150f60a686a741ead8a6ed49cb8c9a0a1017ab5fd61e426cdaa1b2983"`
[INFO] [stderr]    Compiling examples-in-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `std` is imported redundantly
[INFO] [stderr]   --> src/chap5/mod.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     use std;
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `From` is imported redundantly
[INFO] [stderr]  --> src/chap6/mod.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     use std::convert::From;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `ToString` is imported redundantly
[INFO] [stderr]   --> src/chap6/mod.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     use std::string::ToString;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `"docker" "inspect" "ed2f46e150f60a686a741ead8a6ed49cb8c9a0a1017ab5fd61e426cdaa1b2983"`
[INFO] running `"docker" "rm" "-f" "ed2f46e150f60a686a741ead8a6ed49cb8c9a0a1017ab5fd61e426cdaa1b2983"`
[INFO] [stdout] ed2f46e150f60a686a741ead8a6ed49cb8c9a0a1017ab5fd61e426cdaa1b2983
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kigawas/examples-in-rust:/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=warn" "-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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] edbeb9d834bf4206d05f5944d666ba8801bf9039e8e4ea0d991ce58d57058586
[INFO] running `"docker" "start" "-a" "edbeb9d834bf4206d05f5944d666ba8801bf9039e8e4ea0d991ce58d57058586"`
[INFO] [stderr]    Compiling examples-in-rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `std` is imported redundantly
[INFO] [stderr]   --> src/chap5/mod.rs:51:9
[INFO] [stderr]    |
[INFO] [stderr] 51 |     use std;
[INFO] [stderr]    |         ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `From` is imported redundantly
[INFO] [stderr]  --> src/chap6/mod.rs:2:9
[INFO] [stderr]   |
[INFO] [stderr] 2 |     use std::convert::From;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `ToString` is imported redundantly
[INFO] [stderr]   --> src/chap6/mod.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     use std::string::ToString;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.64s
[INFO] running `"docker" "inspect" "edbeb9d834bf4206d05f5944d666ba8801bf9039e8e4ea0d991ce58d57058586"`
[INFO] running `"docker" "rm" "-f" "edbeb9d834bf4206d05f5944d666ba8801bf9039e8e4ea0d991ce58d57058586"`
[INFO] [stdout] edbeb9d834bf4206d05f5944d666ba8801bf9039e8e4ea0d991ce58d57058586
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/kigawas/examples-in-rust:/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=warn" "-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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] b889c4147c961cd3174abfb8919e0656d9233f12af986e1c86b0cc678827bd5f
[INFO] running `"docker" "start" "-a" "b889c4147c961cd3174abfb8919e0656d9233f12af986e1c86b0cc678827bd5f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/examples_in_rust-ac61dd146ad820e3
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b889c4147c961cd3174abfb8919e0656d9233f12af986e1c86b0cc678827bd5f"`
[INFO] running `"docker" "rm" "-f" "b889c4147c961cd3174abfb8919e0656d9233f12af986e1c86b0cc678827bd5f"`
[INFO] [stdout] b889c4147c961cd3174abfb8919e0656d9233f12af986e1c86b0cc678827bd5f