[INFO] updating cached repository acheronfail/di
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/acheronfail/di
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/acheronfail/di" "work/ex/beta-1.38-1/sources/1.37.0/gh/acheronfail/di"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/acheronfail/di'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/acheronfail/di" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/acheronfail/di"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/acheronfail/di'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fab48f2821167d048d7f14addf47123c6e5ef555
[INFO] sha for GitHub repo acheronfail/di: fab48f2821167d048d7f14addf47123c6e5ef555
[INFO] validating manifest of acheronfail/di 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 acheronfail/di 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 acheronfail/di
[INFO] finished frobbing acheronfail/di
[INFO] frobbed toml for acheronfail/di written to work/ex/beta-1.38-1/sources/1.37.0/gh/acheronfail/di/Cargo.toml
[INFO] started frobbing acheronfail/di
[INFO] finished frobbing acheronfail/di
[INFO] frobbed toml for acheronfail/di written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/acheronfail/di/Cargo.toml
[INFO] crate acheronfail/di 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing acheronfail/di 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-2/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/acheronfail/di:/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] 5a83896653ef110228c5c0fc43557a6b1a0bfcb51dd819df88f335dfe1578444
[INFO] running `"docker" "start" "-a" "5a83896653ef110228c5c0fc43557a6b1a0bfcb51dd819df88f335dfe1578444"`
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling same-file v1.0.2
[INFO] [stderr]    Compiling separator v0.3.1
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling syn v0.14.5
[INFO] [stderr]    Compiling walkdir v2.1.4
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling pretty-bytes v0.2.2
[INFO] [stderr]    Compiling aho-corasick v0.6.6
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling globset v0.4.0
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling ignore v0.4.2
[INFO] [stderr]    Compiling structopt-derive v0.2.10
[INFO] [stderr]    Compiling structopt v0.2.10
[INFO] [stderr]    Compiling di v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scan.rs:140:18
[INFO] [stderr]     |
[INFO] [stderr] 140 |         for (i, (mut path, metadata)) in rx.into_iter().enumerate() {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 39.89s
[INFO] running `"docker" "inspect" "5a83896653ef110228c5c0fc43557a6b1a0bfcb51dd819df88f335dfe1578444"`
[INFO] running `"docker" "rm" "-f" "5a83896653ef110228c5c0fc43557a6b1a0bfcb51dd819df88f335dfe1578444"`
[INFO] [stdout] 5a83896653ef110228c5c0fc43557a6b1a0bfcb51dd819df88f335dfe1578444
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/acheronfail/di:/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] abae7f48e530af506a40e89dd95b42130a080225bdb793b8e9ff3451e8ed3d8f
[INFO] running `"docker" "start" "-a" "abae7f48e530af506a40e89dd95b42130a080225bdb793b8e9ff3451e8ed3d8f"`
[INFO] [stderr]    Compiling di v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scan.rs:140:18
[INFO] [stderr]     |
[INFO] [stderr] 140 |         for (i, (mut path, metadata)) in rx.into_iter().enumerate() {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "abae7f48e530af506a40e89dd95b42130a080225bdb793b8e9ff3451e8ed3d8f"`
[INFO] running `"docker" "rm" "-f" "abae7f48e530af506a40e89dd95b42130a080225bdb793b8e9ff3451e8ed3d8f"`
[INFO] [stdout] abae7f48e530af506a40e89dd95b42130a080225bdb793b8e9ff3451e8ed3d8f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/acheronfail/di:/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] df52fa8472d7ee7536e0174e563aefb3029d11541529a514e23b3d85bfd10ad2
[INFO] running `"docker" "start" "-a" "df52fa8472d7ee7536e0174e563aefb3029d11541529a514e23b3d85bfd10ad2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/di-412d3bf28bb03c15
[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" "df52fa8472d7ee7536e0174e563aefb3029d11541529a514e23b3d85bfd10ad2"`
[INFO] running `"docker" "rm" "-f" "df52fa8472d7ee7536e0174e563aefb3029d11541529a514e23b3d85bfd10ad2"`
[INFO] [stdout] df52fa8472d7ee7536e0174e563aefb3029d11541529a514e23b3d85bfd10ad2