[INFO] updating cached repository deciduously/rebuild-markov
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/deciduously/rebuild-markov
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/deciduously/rebuild-markov" "work/ex/beta-1.38-1/sources/1.37.0/gh/deciduously/rebuild-markov"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/deciduously/rebuild-markov'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/deciduously/rebuild-markov" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/deciduously/rebuild-markov"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/deciduously/rebuild-markov'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f6b9c9bb36580d78553954ac55b0ebbc7152f570
[INFO] sha for GitHub repo deciduously/rebuild-markov: f6b9c9bb36580d78553954ac55b0ebbc7152f570
[INFO] validating manifest of deciduously/rebuild-markov 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 deciduously/rebuild-markov 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 deciduously/rebuild-markov
[INFO] finished frobbing deciduously/rebuild-markov
[INFO] frobbed toml for deciduously/rebuild-markov written to work/ex/beta-1.38-1/sources/1.37.0/gh/deciduously/rebuild-markov/Cargo.toml
[INFO] started frobbing deciduously/rebuild-markov
[INFO] finished frobbing deciduously/rebuild-markov
[INFO] frobbed toml for deciduously/rebuild-markov written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/deciduously/rebuild-markov/Cargo.toml
[INFO] crate deciduously/rebuild-markov 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] 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 deciduously/rebuild-markov 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/deciduously/rebuild-markov:/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] d3cdd8b4c87b4bb18d9edec70f49fbf7f33cd4882f42da699826ad8eb9c57ee8
[INFO] running `"docker" "start" "-a" "d3cdd8b4c87b4bb18d9edec70f49fbf7f33cd4882f42da699826ad8eb9c57ee8"`
[INFO] [stderr]    Compiling syn v0.15.32
[INFO] [stderr]    Compiling structopt-derive v0.2.15
[INFO] [stderr]    Compiling structopt v0.2.15
[INFO] [stderr]    Compiling rebuild-markov v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:15:55
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |        ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `length`
[INFO] [stderr]   --> src/main.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                        ^^^^^^ help: consider prefixing with an underscore: `_length`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.84s
[INFO] running `"docker" "inspect" "d3cdd8b4c87b4bb18d9edec70f49fbf7f33cd4882f42da699826ad8eb9c57ee8"`
[INFO] running `"docker" "rm" "-f" "d3cdd8b4c87b4bb18d9edec70f49fbf7f33cd4882f42da699826ad8eb9c57ee8"`
[INFO] [stdout] d3cdd8b4c87b4bb18d9edec70f49fbf7f33cd4882f42da699826ad8eb9c57ee8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/deciduously/rebuild-markov:/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] 44c98be100eff85af616f2f2e9060ee213ffd5d4300974299c5aaf04f61369d9
[INFO] running `"docker" "start" "-a" "44c98be100eff85af616f2f2e9060ee213ffd5d4300974299c5aaf04f61369d9"`
[INFO] [stderr]    Compiling rebuild-markov v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:15:55
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                                       ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:15:8
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |        ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `length`
[INFO] [stderr]   --> src/main.rs:15:24
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn run(input: PathBuf, length: u32) -> Result<(), Box<Error>> {
[INFO] [stderr]    |                        ^^^^^^ help: consider prefixing with an underscore: `_length`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `"docker" "inspect" "44c98be100eff85af616f2f2e9060ee213ffd5d4300974299c5aaf04f61369d9"`
[INFO] running `"docker" "rm" "-f" "44c98be100eff85af616f2f2e9060ee213ffd5d4300974299c5aaf04f61369d9"`
[INFO] [stdout] 44c98be100eff85af616f2f2e9060ee213ffd5d4300974299c5aaf04f61369d9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/deciduously/rebuild-markov:/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] f8afb864437f504f0e5aabb61fe5a09198da1ba880eca8f64a8802bcb783a261
[INFO] running `"docker" "start" "-a" "f8afb864437f504f0e5aabb61fe5a09198da1ba880eca8f64a8802bcb783a261"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rebuild_markov-817cad5ccd3b8f78
[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" "f8afb864437f504f0e5aabb61fe5a09198da1ba880eca8f64a8802bcb783a261"`
[INFO] running `"docker" "rm" "-f" "f8afb864437f504f0e5aabb61fe5a09198da1ba880eca8f64a8802bcb783a261"`
[INFO] [stdout] f8afb864437f504f0e5aabb61fe5a09198da1ba880eca8f64a8802bcb783a261