[INFO] updating cached repository howeih/Day-33-Reservoir-sampling
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/howeih/Day-33-Reservoir-sampling
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-33-Reservoir-sampling" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/howeih/Day-33-Reservoir-sampling"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/howeih/Day-33-Reservoir-sampling'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/howeih/Day-33-Reservoir-sampling" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/howeih/Day-33-Reservoir-sampling"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/howeih/Day-33-Reservoir-sampling'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] df8aff5b02fb3fc163b35974ec4dd335a1c806f5
[INFO] sha for GitHub repo howeih/Day-33-Reservoir-sampling: df8aff5b02fb3fc163b35974ec4dd335a1c806f5
[INFO] validating manifest of howeih/Day-33-Reservoir-sampling on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of howeih/Day-33-Reservoir-sampling on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing howeih/Day-33-Reservoir-sampling
[INFO] finished frobbing howeih/Day-33-Reservoir-sampling
[INFO] frobbed toml for howeih/Day-33-Reservoir-sampling written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/howeih/Day-33-Reservoir-sampling/Cargo.toml
[INFO] started frobbing howeih/Day-33-Reservoir-sampling
[INFO] finished frobbing howeih/Day-33-Reservoir-sampling
[INFO] frobbed toml for howeih/Day-33-Reservoir-sampling written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/howeih/Day-33-Reservoir-sampling/Cargo.toml
[INFO] crate howeih/Day-33-Reservoir-sampling has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing howeih/Day-33-Reservoir-sampling against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/howeih/Day-33-Reservoir-sampling:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 2af84e81998e11e8c3dbd109fac530ea8ab3de4fa711d550877d166f694dcd6c
[INFO] running `"docker" "start" "-a" "2af84e81998e11e8c3dbd109fac530ea8ab3de4fa711d550877d166f694dcd6c"`
[INFO] [stderr]    Compiling rand v0.5.4
[INFO] [stderr]    Compiling reservoir_sampling v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.12s
[INFO] running `"docker" "inspect" "2af84e81998e11e8c3dbd109fac530ea8ab3de4fa711d550877d166f694dcd6c"`
[INFO] running `"docker" "rm" "-f" "2af84e81998e11e8c3dbd109fac530ea8ab3de4fa711d550877d166f694dcd6c"`
[INFO] [stdout] 2af84e81998e11e8c3dbd109fac530ea8ab3de4fa711d550877d166f694dcd6c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/howeih/Day-33-Reservoir-sampling:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 178ee0b15183f70e889a518c15f4e966fb540097c9da0160365ac4f0de477180
[INFO] running `"docker" "start" "-a" "178ee0b15183f70e889a518c15f4e966fb540097c9da0160365ac4f0de477180"`
[INFO] [stderr]    Compiling reservoir_sampling v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "178ee0b15183f70e889a518c15f4e966fb540097c9da0160365ac4f0de477180"`
[INFO] running `"docker" "rm" "-f" "178ee0b15183f70e889a518c15f4e966fb540097c9da0160365ac4f0de477180"`
[INFO] [stdout] 178ee0b15183f70e889a518c15f4e966fb540097c9da0160365ac4f0de477180
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-7/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/howeih/Day-33-Reservoir-sampling:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 9f5663f10647c7c1a1a4b1e350d0975fd47225f8a1e7e9685fda232819d4d314
[INFO] running `"docker" "start" "-a" "9f5663f10647c7c1a1a4b1e350d0975fd47225f8a1e7e9685fda232819d4d314"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/reservoir_sampling-a476906ff2310dd5
[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" "9f5663f10647c7c1a1a4b1e350d0975fd47225f8a1e7e9685fda232819d4d314"`
[INFO] running `"docker" "rm" "-f" "9f5663f10647c7c1a1a4b1e350d0975fd47225f8a1e7e9685fda232819d4d314"`
[INFO] [stdout] 9f5663f10647c7c1a1a4b1e350d0975fd47225f8a1e7e9685fda232819d4d314