[INFO] updating cached repository onur/docs.rs
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/onur/docs.rs
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/onur/docs.rs" "work/ex/beta-1.38-1/sources/1.37.0/gh/onur/docs.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/onur/docs.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/onur/docs.rs" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/onur/docs.rs"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/onur/docs.rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cee3f821bce5e236639b2478096de0fee58b32cb
[INFO] sha for GitHub repo onur/docs.rs: cee3f821bce5e236639b2478096de0fee58b32cb
[INFO] validating manifest of onur/docs.rs 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 onur/docs.rs 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 onur/docs.rs
[INFO] removed path dependency badge from onur/docs.rs
[INFO] finished frobbing onur/docs.rs
[INFO] frobbed toml for onur/docs.rs written to work/ex/beta-1.38-1/sources/1.37.0/gh/onur/docs.rs/Cargo.toml
[INFO] started frobbing onur/docs.rs
[INFO] removed path dependency badge from onur/docs.rs
[INFO] finished frobbing onur/docs.rs
[INFO] frobbed toml for onur/docs.rs written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/onur/docs.rs/Cargo.toml
[INFO] crate onur/docs.rs 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]     Updating crates.io index
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/onur/docs.rs/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[INFO] the lockfile is outdated, regenerating it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] [stderr]     Updating git repository `https://github.com/rust-lang/cargo.git`
[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] [stderr]     Updating git repository `https://github.com/rust-lang/cargo.git`
[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 onur/docs.rs 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-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/onur/docs.rs:/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] 5aa0622ebe619af4c4c040c3a56160bea36640079bc9cf4d9b52a9eb44c8460d
[INFO] running `"docker" "start" "-a" "5aa0622ebe619af4c4c040c3a56160bea36640079bc9cf4d9b52a9eb44c8460d"`
[INFO] [stderr] error: multiple packages link to native library `git2`, but a native library can be linked only once
[INFO] [stderr] 
[INFO] [stderr] package `libgit2-sys v0.8.2`
[INFO] [stderr]     ... which is depended on by `cargo v0.39.0 (https://github.com/rust-lang/cargo.git#60b7bf00)`
[INFO] [stderr]     ... which is depended on by `cratesfyi v0.6.0 (/opt/crater/workdir)`
[INFO] [stderr] links to native library `git2`
[INFO] [stderr] 
[INFO] [stderr] package `libgit2-sys v0.7.1`
[INFO] [stderr]     ... which is depended on by `git2 v0.7.1`
[INFO] [stderr]     ... which is depended on by `cratesfyi v0.6.0 (/opt/crater/workdir)`
[INFO] [stderr] also links to native library `git2`
[INFO] running `"docker" "inspect" "5aa0622ebe619af4c4c040c3a56160bea36640079bc9cf4d9b52a9eb44c8460d"`
[INFO] running `"docker" "rm" "-f" "5aa0622ebe619af4c4c040c3a56160bea36640079bc9cf4d9b52a9eb44c8460d"`
[INFO] [stdout] 5aa0622ebe619af4c4c040c3a56160bea36640079bc9cf4d9b52a9eb44c8460d