[INFO] updating cached repository toiletspider/mt_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/toiletspider/mt_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/toiletspider/mt_rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/toiletspider/mt_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/toiletspider/mt_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/toiletspider/mt_rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/toiletspider/mt_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/toiletspider/mt_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e97f006f454682e69a60974a23da227cdebc89c4
[INFO] sha for GitHub repo toiletspider/mt_rust: e97f006f454682e69a60974a23da227cdebc89c4
[INFO] validating manifest of toiletspider/mt_rust on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of toiletspider/mt_rust on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing toiletspider/mt_rust
[INFO] finished frobbing toiletspider/mt_rust
[INFO] frobbed toml for toiletspider/mt_rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/toiletspider/mt_rust/Cargo.toml
[INFO] started frobbing toiletspider/mt_rust
[INFO] finished frobbing toiletspider/mt_rust
[INFO] frobbed toml for toiletspider/mt_rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/toiletspider/mt_rust/Cargo.toml
[INFO] crate toiletspider/mt_rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing toiletspider/mt_rust against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/toiletspider/mt_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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 8a59b4a12d292d56fa81e10f46e0abe555902c538509d58904cf695cadc18dc2
[INFO] running `"docker" "start" "-a" "8a59b4a12d292d56fa81e10f46e0abe555902c538509d58904cf695cadc18dc2"`
[INFO] [stderr]    Compiling mt_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `c_double`
[INFO] [stderr]  --> src/lib.rs:1:35
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::os::raw::{c_char, c_int, c_double};
[INFO] [stderr]   |                                   ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `c_double`
[INFO] [stderr]  --> src/lib.rs:1:35
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::os::raw::{c_char, c_int, c_double};
[INFO] [stderr]   |                                   ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `"docker" "inspect" "8a59b4a12d292d56fa81e10f46e0abe555902c538509d58904cf695cadc18dc2"`
[INFO] running `"docker" "rm" "-f" "8a59b4a12d292d56fa81e10f46e0abe555902c538509d58904cf695cadc18dc2"`
[INFO] [stdout] 8a59b4a12d292d56fa81e10f46e0abe555902c538509d58904cf695cadc18dc2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/toiletspider/mt_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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 899328efe3a1360e38827e7352635a7bb4c181f9c723e19639bfdb037c15fff7
[INFO] running `"docker" "start" "-a" "899328efe3a1360e38827e7352635a7bb4c181f9c723e19639bfdb037c15fff7"`
[INFO] [stderr]    Compiling mt_rust v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `c_double`
[INFO] [stderr]  --> src/lib.rs:1:35
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::os::raw::{c_char, c_int, c_double};
[INFO] [stderr]   |                                   ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `c_double`
[INFO] [stderr]  --> src/lib.rs:1:35
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::os::raw::{c_char, c_int, c_double};
[INFO] [stderr]   |                                   ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `"docker" "inspect" "899328efe3a1360e38827e7352635a7bb4c181f9c723e19639bfdb037c15fff7"`
[INFO] running `"docker" "rm" "-f" "899328efe3a1360e38827e7352635a7bb4c181f9c723e19639bfdb037c15fff7"`
[INFO] [stdout] 899328efe3a1360e38827e7352635a7bb4c181f9c723e19639bfdb037c15fff7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/toiletspider/mt_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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 14593a2644e0700fd4c83242e160678c5e454fc048096c84af49116e6126ba7c
[INFO] running `"docker" "start" "-a" "14593a2644e0700fd4c83242e160678c5e454fc048096c84af49116e6126ba7c"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mt_rust-17f330ec635ec6cf
[INFO] [stdout] 
[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] [stderr]      Running /opt/crater/target/debug/deps/mt_rust-10043a61b87997d4
[INFO] [stdout] 
[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" "14593a2644e0700fd4c83242e160678c5e454fc048096c84af49116e6126ba7c"`
[INFO] running `"docker" "rm" "-f" "14593a2644e0700fd4c83242e160678c5e454fc048096c84af49116e6126ba7c"`
[INFO] [stdout] 14593a2644e0700fd4c83242e160678c5e454fc048096c84af49116e6126ba7c