[INFO] updating cached repository Byron/git-reconstruct
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Byron/git-reconstruct
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Byron/git-reconstruct" "work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/git-reconstruct"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/git-reconstruct'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Byron/git-reconstruct" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Byron/git-reconstruct"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Byron/git-reconstruct'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fb99104bc00fbde35e7ca1ace6bc4f95b9ca5449
[INFO] sha for GitHub repo Byron/git-reconstruct: fb99104bc00fbde35e7ca1ace6bc4f95b9ca5449
[INFO] validating manifest of Byron/git-reconstruct 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 Byron/git-reconstruct 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 Byron/git-reconstruct
[INFO] finished frobbing Byron/git-reconstruct
[INFO] frobbed toml for Byron/git-reconstruct written to work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/git-reconstruct/Cargo.toml
[INFO] started frobbing Byron/git-reconstruct
[INFO] finished frobbing Byron/git-reconstruct
[INFO] frobbed toml for Byron/git-reconstruct written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Byron/git-reconstruct/Cargo.toml
[INFO] crate Byron/git-reconstruct 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 Byron/git-reconstruct 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-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/git-reconstruct:/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] 70b7568f3da3951e5e1654df9504af094cfa297f8b0ce2c47ec9386ef7a3edac
[INFO] running `"docker" "start" "-a" "70b7568f3da3951e5e1654df9504af094cfa297f8b0ce2c47ec9386ef7a3edac"`
[INFO] [stderr]    Compiling getopts v0.2.17
[INFO] [stderr]    Compiling crossbeam-utils v0.4.0
[INFO] [stderr]    Compiling same-file v1.0.2
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling termios v0.2.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling cmake v0.1.31
[INFO] [stderr]    Compiling openssl-sys v0.9.32
[INFO] [stderr]    Compiling curl-sys v0.4.5
[INFO] [stderr]    Compiling lz4-sys v1.8.0
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling clicolors-control v0.2.0
[INFO] [stderr]    Compiling log v0.4.2
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling walkdir v2.1.4
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.3
[INFO] [stderr]    Compiling libssh2-sys v0.2.7
[INFO] [stderr]    Compiling libgit2-sys v0.7.3
[INFO] [stderr]    Compiling bincode v1.0.0
[INFO] [stderr]    Compiling pulldown-cmark v0.0.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling structopt-derive v0.2.10
[INFO] [stderr]    Compiling parking_lot v0.5.5
[INFO] [stderr]    Compiling backtrace v0.3.8
[INFO] [stderr]    Compiling crossbeam-channel v0.2.1
[INFO] [stderr]    Compiling skeptic v0.9.0
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling lz4 v1.22.0
[INFO] [stderr]    Compiling failure-tools v4.0.2
[INFO] [stderr]    Compiling console v0.6.1
[INFO] [stderr]    Compiling indicatif v0.9.0
[INFO] [stderr]    Compiling structopt v0.2.10
[INFO] [stderr]    Compiling git2 v0.7.1
[INFO] [stderr]    Compiling git-reconstruct v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lut.rs:125:13
[INFO] [stderr]     |
[INFO] [stderr] 125 |         for mut edges in &mut self.vertices_to_edges {
[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: unused `std::result::Result` in tuple element 1 that must be used
[INFO] [stderr]   --> src/cli.rs:81:17
[INFO] [stderr]    |
[INFO] [stderr] 81 |                 encoder.finish();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4m 13s
[INFO] running `"docker" "inspect" "70b7568f3da3951e5e1654df9504af094cfa297f8b0ce2c47ec9386ef7a3edac"`
[INFO] running `"docker" "rm" "-f" "70b7568f3da3951e5e1654df9504af094cfa297f8b0ce2c47ec9386ef7a3edac"`
[INFO] [stdout] 70b7568f3da3951e5e1654df9504af094cfa297f8b0ce2c47ec9386ef7a3edac
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/git-reconstruct:/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] 3c2ce39cf0aa3661944a9074fd5d5b1eaa9758bb33f70a0e2ecb0f63e4f5d749
[INFO] running `"docker" "start" "-a" "3c2ce39cf0aa3661944a9074fd5d5b1eaa9758bb33f70a0e2ecb0f63e4f5d749"`
[INFO] [stderr]    Compiling git-reconstruct v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lut.rs:125:13
[INFO] [stderr]     |
[INFO] [stderr] 125 |         for mut edges in &mut self.vertices_to_edges {
[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: unused `std::result::Result` in tuple element 1 that must be used
[INFO] [stderr]   --> src/cli.rs:81:17
[INFO] [stderr]    |
[INFO] [stderr] 81 |                 encoder.finish();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `"docker" "inspect" "3c2ce39cf0aa3661944a9074fd5d5b1eaa9758bb33f70a0e2ecb0f63e4f5d749"`
[INFO] running `"docker" "rm" "-f" "3c2ce39cf0aa3661944a9074fd5d5b1eaa9758bb33f70a0e2ecb0f63e4f5d749"`
[INFO] [stdout] 3c2ce39cf0aa3661944a9074fd5d5b1eaa9758bb33f70a0e2ecb0f63e4f5d749
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Byron/git-reconstruct:/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] a9001a895f24e17346d703c23fccf31ec287cffd3343d76a56d25827d23c1f7d
[INFO] running `"docker" "start" "-a" "a9001a895f24e17346d703c23fccf31ec287cffd3343d76a56d25827d23c1f7d"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/git_reconstruct-3e30fd99aa02b978
[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" "a9001a895f24e17346d703c23fccf31ec287cffd3343d76a56d25827d23c1f7d"`
[INFO] running `"docker" "rm" "-f" "a9001a895f24e17346d703c23fccf31ec287cffd3343d76a56d25827d23c1f7d"`
[INFO] [stdout] a9001a895f24e17346d703c23fccf31ec287cffd3343d76a56d25827d23c1f7d