[INFO] updating cached repository sriharshakappala/rust-stackoverflow
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sriharshakappala/rust-stackoverflow
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sriharshakappala/rust-stackoverflow" "work/ex/beta-1.38-1/sources/1.37.0/gh/sriharshakappala/rust-stackoverflow"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sriharshakappala/rust-stackoverflow'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sriharshakappala/rust-stackoverflow" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sriharshakappala/rust-stackoverflow"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sriharshakappala/rust-stackoverflow'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9535da6505e6ab8a95e386ac4c7f22a371f33da9
[INFO] sha for GitHub repo sriharshakappala/rust-stackoverflow: 9535da6505e6ab8a95e386ac4c7f22a371f33da9
[INFO] validating manifest of sriharshakappala/rust-stackoverflow 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 sriharshakappala/rust-stackoverflow 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 sriharshakappala/rust-stackoverflow
[INFO] finished frobbing sriharshakappala/rust-stackoverflow
[INFO] frobbed toml for sriharshakappala/rust-stackoverflow written to work/ex/beta-1.38-1/sources/1.37.0/gh/sriharshakappala/rust-stackoverflow/Cargo.toml
[INFO] started frobbing sriharshakappala/rust-stackoverflow
[INFO] finished frobbing sriharshakappala/rust-stackoverflow
[INFO] frobbed toml for sriharshakappala/rust-stackoverflow written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sriharshakappala/rust-stackoverflow/Cargo.toml
[INFO] crate sriharshakappala/rust-stackoverflow 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] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sriharshakappala/rust-stackoverflow/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] testing sriharshakappala/rust-stackoverflow 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sriharshakappala/rust-stackoverflow:/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] 0083cdda1f9c6e39fea31ffde20db4245cbd31a98b756f3551f14294adee2414
[INFO] running `"docker" "start" "-a" "0083cdda1f9c6e39fea31ffde20db4245cbd31a98b756f3551f14294adee2414"`
[INFO] [stderr]    Compiling curl-sys v0.1.35
[INFO] [stderr]    Compiling curl v0.2.19
[INFO] [stderr]    Compiling stackoverflow v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 28s
[INFO] running `"docker" "inspect" "0083cdda1f9c6e39fea31ffde20db4245cbd31a98b756f3551f14294adee2414"`
[INFO] running `"docker" "rm" "-f" "0083cdda1f9c6e39fea31ffde20db4245cbd31a98b756f3551f14294adee2414"`
[INFO] [stdout] 0083cdda1f9c6e39fea31ffde20db4245cbd31a98b756f3551f14294adee2414
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sriharshakappala/rust-stackoverflow:/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] 9ebbd7bf67a6b974fbf6d207bc7c9d23a2b8eb1f85dec96802d90de5e6b57c3e
[INFO] running `"docker" "start" "-a" "9ebbd7bf67a6b974fbf6d207bc7c9d23a2b8eb1f85dec96802d90de5e6b57c3e"`
[INFO] [stderr]    Compiling stackoverflow v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "9ebbd7bf67a6b974fbf6d207bc7c9d23a2b8eb1f85dec96802d90de5e6b57c3e"`
[INFO] running `"docker" "rm" "-f" "9ebbd7bf67a6b974fbf6d207bc7c9d23a2b8eb1f85dec96802d90de5e6b57c3e"`
[INFO] [stdout] 9ebbd7bf67a6b974fbf6d207bc7c9d23a2b8eb1f85dec96802d90de5e6b57c3e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/sriharshakappala/rust-stackoverflow:/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] c4fcc577e0f9abee331ff27e11feda10f83228834bef955d76f25d9acc95e22f
[INFO] running `"docker" "start" "-a" "c4fcc577e0f9abee331ff27e11feda10f83228834bef955d76f25d9acc95e22f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/stackoverflow-14905f2a48126c03
[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] [stderr]    Doc-tests stackoverflow
[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" "c4fcc577e0f9abee331ff27e11feda10f83228834bef955d76f25d9acc95e22f"`
[INFO] running `"docker" "rm" "-f" "c4fcc577e0f9abee331ff27e11feda10f83228834bef955d76f25d9acc95e22f"`
[INFO] [stdout] c4fcc577e0f9abee331ff27e11feda10f83228834bef955d76f25d9acc95e22f