[INFO] cloning repository davidbarsky/fs-sync
[INFO] running `"git" "clone" "--bare" "git://github.com/davidbarsky/fs-sync.git" "work/cache/sources/gh/davidbarsky/fs-sync"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/davidbarsky/fs-sync'...
[INFO] running `"git" "clone" "work/cache/sources/gh/davidbarsky/fs-sync" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/davidbarsky/fs-sync"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/davidbarsky/fs-sync'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/davidbarsky/fs-sync" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/davidbarsky/fs-sync"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/davidbarsky/fs-sync'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f35f62e82a0658d83c69ac81955c2dbf6f932aa2
[INFO] sha for GitHub repo davidbarsky/fs-sync: f35f62e82a0658d83c69ac81955c2dbf6f932aa2
[INFO] validating manifest of davidbarsky/fs-sync on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of davidbarsky/fs-sync on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing davidbarsky/fs-sync
[INFO] finished frobbing davidbarsky/fs-sync
[INFO] frobbed toml for davidbarsky/fs-sync written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/davidbarsky/fs-sync/Cargo.toml
[INFO] started frobbing davidbarsky/fs-sync
[INFO] finished frobbing davidbarsky/fs-sync
[INFO] frobbed toml for davidbarsky/fs-sync written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/davidbarsky/fs-sync/Cargo.toml
[INFO] crate davidbarsky/fs-sync already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] building davidbarsky/fs-sync against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/davidbarsky/fs-sync:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 3b81a47affc3a151ed8c9ff661c5fa08286bc86a34536d42273198072df7d2ac
[INFO] running `"docker" "start" "-a" "3b81a47affc3a151ed8c9ff661c5fa08286bc86a34536d42273198072df7d2ac"`
[INFO] [stderr]    Compiling bytes v0.3.0
[INFO] [stderr]    Compiling same-file v1.0.0
[INFO] [stderr]    Compiling crossbeam v0.2.10
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling cmake v0.1.26
[INFO] [stderr]    Compiling libz-sys v1.0.18
[INFO] [stderr]    Compiling openssl-sys v0.9.20
[INFO] [stderr]    Compiling memchr v2.0.0
[INFO] [stderr]    Compiling inotify v0.3.0
[INFO] [stderr]    Compiling net2 v0.2.31
[INFO] [stderr]    Compiling filetime v0.1.14
[INFO] [stderr]    Compiling nix v0.5.1
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling loggerv v0.4.0
[INFO] [stderr]    Compiling walkdir v2.0.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]    Compiling libssh2-sys v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.1.1
[INFO] [stderr]    Compiling structopt v0.1.1
[INFO] [stderr]    Compiling backtrace v0.3.3
[INFO] [stderr]    Compiling miow v0.1.5
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling mio v0.5.1
[INFO] [stderr]    Compiling notify v4.0.1
[INFO] [stderr]    Compiling globset v0.2.1
[INFO] [stderr]    Compiling ignore v0.3.1
[INFO] [stderr]    Compiling ssh2 v0.3.2
[INFO] [stderr]    Compiling fs-sync v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/local.rs:71:5
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/local.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `full_sync`
[INFO] [stderr]    --> src/local.rs:191:5
[INFO] [stderr]     |
[INFO] [stderr] 191 |     fn full_sync(&self, file_map: &PathMap) -> Result<(), Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.23s
[INFO] running `"docker" "inspect" "3b81a47affc3a151ed8c9ff661c5fa08286bc86a34536d42273198072df7d2ac"`
[INFO] running `"docker" "rm" "-f" "3b81a47affc3a151ed8c9ff661c5fa08286bc86a34536d42273198072df7d2ac"`
[INFO] [stdout] 3b81a47affc3a151ed8c9ff661c5fa08286bc86a34536d42273198072df7d2ac
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/davidbarsky/fs-sync:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] c1fcac5189acd49995ee94a5fd61dc0d18db652f9d93892a348eb0a6457265f4
[INFO] running `"docker" "start" "-a" "c1fcac5189acd49995ee94a5fd61dc0d18db652f9d93892a348eb0a6457265f4"`
[INFO] [stderr]    Compiling fs-sync v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/local.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `full_sync`
[INFO] [stderr]    --> src/local.rs:191:5
[INFO] [stderr]     |
[INFO] [stderr] 191 |     fn full_sync(&self, file_map: &PathMap) -> Result<(), Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.02s
[INFO] running `"docker" "inspect" "c1fcac5189acd49995ee94a5fd61dc0d18db652f9d93892a348eb0a6457265f4"`
[INFO] running `"docker" "rm" "-f" "c1fcac5189acd49995ee94a5fd61dc0d18db652f9d93892a348eb0a6457265f4"`
[INFO] [stdout] c1fcac5189acd49995ee94a5fd61dc0d18db652f9d93892a348eb0a6457265f4