[INFO] updating cached repository amazingmo/ownership
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/amazingmo/ownership
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/amazingmo/ownership" "work/ex/beta-1.38-1/sources/1.37.0/gh/amazingmo/ownership"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/amazingmo/ownership'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/amazingmo/ownership" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amazingmo/ownership"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amazingmo/ownership'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9090675cd8a4ace86399b4da3e3c1f8c0738a6dd
[INFO] sha for GitHub repo amazingmo/ownership: 9090675cd8a4ace86399b4da3e3c1f8c0738a6dd
[INFO] validating manifest of amazingmo/ownership 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 amazingmo/ownership 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 amazingmo/ownership
[INFO] finished frobbing amazingmo/ownership
[INFO] frobbed toml for amazingmo/ownership written to work/ex/beta-1.38-1/sources/1.37.0/gh/amazingmo/ownership/Cargo.toml
[INFO] started frobbing amazingmo/ownership
[INFO] finished frobbing amazingmo/ownership
[INFO] frobbed toml for amazingmo/ownership written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amazingmo/ownership/Cargo.toml
[INFO] crate amazingmo/ownership 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing amazingmo/ownership against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amazingmo/ownership:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] b4d6f853fa273d62e197c48f3bcbf1b89eb167e00b7d89a383d08b78e1b63d40
[INFO] running `"docker" "start" "-a" "b4d6f853fa273d62e197c48f3bcbf1b89eb167e00b7d89a383d08b78e1b63d40"`
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `first`
[INFO] [stderr]   --> src/main.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let first = std::mem::replace( &mut v[0], "replacement".to_string());
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_first`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "b4d6f853fa273d62e197c48f3bcbf1b89eb167e00b7d89a383d08b78e1b63d40"`
[INFO] running `"docker" "rm" "-f" "b4d6f853fa273d62e197c48f3bcbf1b89eb167e00b7d89a383d08b78e1b63d40"`
[INFO] [stdout] b4d6f853fa273d62e197c48f3bcbf1b89eb167e00b7d89a383d08b78e1b63d40
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amazingmo/ownership:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 509c27ff0eed4c42c3292b26fc486d24b6cc41c08bd891d4df254d89b6ae63b3
[INFO] running `"docker" "start" "-a" "509c27ff0eed4c42c3292b26fc486d24b6cc41c08bd891d4df254d89b6ae63b3"`
[INFO] [stderr]    Compiling ownership v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `first`
[INFO] [stderr]   --> src/main.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     let first = std::mem::replace( &mut v[0], "replacement".to_string());
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_first`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `"docker" "inspect" "509c27ff0eed4c42c3292b26fc486d24b6cc41c08bd891d4df254d89b6ae63b3"`
[INFO] running `"docker" "rm" "-f" "509c27ff0eed4c42c3292b26fc486d24b6cc41c08bd891d4df254d89b6ae63b3"`
[INFO] [stdout] 509c27ff0eed4c42c3292b26fc486d24b6cc41c08bd891d4df254d89b6ae63b3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/amazingmo/ownership:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] d525c40092cb941174013ce3e5f8ba7f593f8f9a11fa907df5201ddce36eec80
[INFO] running `"docker" "start" "-a" "d525c40092cb941174013ce3e5f8ba7f593f8f9a11fa907df5201ddce36eec80"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ownership-2919711d5538c492
[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" "d525c40092cb941174013ce3e5f8ba7f593f8f9a11fa907df5201ddce36eec80"`
[INFO] running `"docker" "rm" "-f" "d525c40092cb941174013ce3e5f8ba7f593f8f9a11fa907df5201ddce36eec80"`
[INFO] [stdout] d525c40092cb941174013ce3e5f8ba7f593f8f9a11fa907df5201ddce36eec80