[INFO] updating cached repository skk/git_submodules
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/skk/git_submodules
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/skk/git_submodules" "work/ex/beta-1.38-1/sources/1.37.0/gh/skk/git_submodules"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/skk/git_submodules'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/skk/git_submodules" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/skk/git_submodules"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/skk/git_submodules'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 322256bc27880b3007089fce9b68e67ef3bcaceb
[INFO] sha for GitHub repo skk/git_submodules: 322256bc27880b3007089fce9b68e67ef3bcaceb
[INFO] validating manifest of skk/git_submodules 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 skk/git_submodules 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 skk/git_submodules
[INFO] finished frobbing skk/git_submodules
[INFO] frobbed toml for skk/git_submodules written to work/ex/beta-1.38-1/sources/1.37.0/gh/skk/git_submodules/Cargo.toml
[INFO] started frobbing skk/git_submodules
[INFO] finished frobbing skk/git_submodules
[INFO] frobbed toml for skk/git_submodules written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/skk/git_submodules/Cargo.toml
[INFO] crate skk/git_submodules 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 skk/git_submodules 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-6/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/skk/git_submodules:/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] 16e2b1c32c96bab8ba07545330ebb6b85d8c422212e83fc3fd8d3dd66a2cef92
[INFO] running `"docker" "start" "-a" "16e2b1c32c96bab8ba07545330ebb6b85d8c422212e83fc3fd8d3dd66a2cef92"`
[INFO] [stderr]    Compiling serde v1.0.62
[INFO] [stderr]    Compiling cmake v0.1.31
[INFO] [stderr]    Compiling openssl-sys v0.9.31
[INFO] [stderr]    Compiling proc-macro2 v0.4.3
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling quote v0.6.2
[INFO] [stderr]    Compiling syn v0.14.0
[INFO] [stderr]    Compiling libssh2-sys v0.2.7
[INFO] [stderr]    Compiling libgit2-sys v0.7.1
[INFO] [stderr]    Compiling regex v1.0.0
[INFO] [stderr]    Compiling curl-sys v0.4.5
[INFO] [stderr]    Compiling serde_derive v1.0.62
[INFO] [stderr]    Compiling serde_json v1.0.18
[INFO] [stderr]    Compiling git2 v0.7.1
[INFO] [stderr]    Compiling git_submodules v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/app.rs:78:25
[INFO] [stderr]    |
[INFO] [stderr] 78 |                     let mut path = name.clone();
[INFO] [stderr]    |                         ----^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `repo`
[INFO] [stderr]   --> src/app.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     repo: Repository,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 14s
[INFO] running `"docker" "inspect" "16e2b1c32c96bab8ba07545330ebb6b85d8c422212e83fc3fd8d3dd66a2cef92"`
[INFO] running `"docker" "rm" "-f" "16e2b1c32c96bab8ba07545330ebb6b85d8c422212e83fc3fd8d3dd66a2cef92"`
[INFO] [stdout] 16e2b1c32c96bab8ba07545330ebb6b85d8c422212e83fc3fd8d3dd66a2cef92
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/skk/git_submodules:/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] dca8828b44ea69afaf93ab85ca7c4263a3b07a32f715714656d8716da3768aa3
[INFO] running `"docker" "start" "-a" "dca8828b44ea69afaf93ab85ca7c4263a3b07a32f715714656d8716da3768aa3"`
[INFO] [stderr]    Compiling git_submodules v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/app.rs:78:25
[INFO] [stderr]    |
[INFO] [stderr] 78 |                     let mut path = name.clone();
[INFO] [stderr]    |                         ----^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `repo`
[INFO] [stderr]   --> src/app.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     repo: Repository,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.86s
[INFO] running `"docker" "inspect" "dca8828b44ea69afaf93ab85ca7c4263a3b07a32f715714656d8716da3768aa3"`
[INFO] running `"docker" "rm" "-f" "dca8828b44ea69afaf93ab85ca7c4263a3b07a32f715714656d8716da3768aa3"`
[INFO] [stdout] dca8828b44ea69afaf93ab85ca7c4263a3b07a32f715714656d8716da3768aa3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/skk/git_submodules:/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] b640d8a20830e854e5d1dd05f50dbdcdb433a5f88494d01c1b4f0498b40c7e8e
[INFO] running `"docker" "start" "-a" "b640d8a20830e854e5d1dd05f50dbdcdb433a5f88494d01c1b4f0498b40c7e8e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/git_submodules-86d9eae426a3e48e
[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/main-5f118d5d46eb4d96
[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]    Doc-tests git_submodules
[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" "b640d8a20830e854e5d1dd05f50dbdcdb433a5f88494d01c1b4f0498b40c7e8e"`
[INFO] running `"docker" "rm" "-f" "b640d8a20830e854e5d1dd05f50dbdcdb433a5f88494d01c1b4f0498b40c7e8e"`
[INFO] [stdout] b640d8a20830e854e5d1dd05f50dbdcdb433a5f88494d01c1b4f0498b40c7e8e