[INFO] crate launchdarkly 0.0.0 is already in cache
[INFO] extracting crate launchdarkly 0.0.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/launchdarkly/0.0.0
[INFO] extracting crate launchdarkly 0.0.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/launchdarkly/0.0.0
[INFO] validating manifest of launchdarkly-0.0.0 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 launchdarkly-0.0.0 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 launchdarkly-0.0.0
[INFO] finished frobbing launchdarkly-0.0.0
[INFO] frobbed toml for launchdarkly-0.0.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/launchdarkly/0.0.0/Cargo.toml
[INFO] started frobbing launchdarkly-0.0.0
[INFO] finished frobbing launchdarkly-0.0.0
[INFO] frobbed toml for launchdarkly-0.0.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/launchdarkly/0.0.0/Cargo.toml
[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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing launchdarkly-0.0.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/launchdarkly/0.0.0:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 696c72a8f5527c988904f7385e9acd9ab7aa30690ad2891870c171fc60c33865
[INFO] running `"docker" "start" "-a" "696c72a8f5527c988904f7385e9acd9ab7aa30690ad2891870c171fc60c33865"`
[INFO] [stderr]    Compiling launchdarkly v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:46:26
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub type Future<T> = Box<StdFuture<Item = T, Error = Error>>;
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StdFuture<Item = T, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/lib.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | /     error_chain! {
[INFO] [stderr] 34 | |         foreign_links {
[INFO] [stderr] 35 | |             Codec(SerdeError);
[INFO] [stderr] 36 | |             Http(HttpError);
[INFO] [stderr] ...  |
[INFO] [stderr] 39 | |         }
[INFO] [stderr] 40 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/lib.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | /     error_chain! {
[INFO] [stderr] 34 | |         foreign_links {
[INFO] [stderr] 35 | |             Codec(SerdeError);
[INFO] [stderr] 36 | |             Http(HttpError);
[INFO] [stderr] ...  |
[INFO] [stderr] 39 | |         }
[INFO] [stderr] 40 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.19s
[INFO] running `"docker" "inspect" "696c72a8f5527c988904f7385e9acd9ab7aa30690ad2891870c171fc60c33865"`
[INFO] running `"docker" "rm" "-f" "696c72a8f5527c988904f7385e9acd9ab7aa30690ad2891870c171fc60c33865"`
[INFO] [stdout] 696c72a8f5527c988904f7385e9acd9ab7aa30690ad2891870c171fc60c33865
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/launchdarkly/0.0.0:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 55c56f348dc20df270c3376617e6ef62e37e1e61aae2522fbadc61876febb78b
[INFO] running `"docker" "start" "-a" "55c56f348dc20df270c3376617e6ef62e37e1e61aae2522fbadc61876febb78b"`
[INFO] [stderr]    Compiling launchdarkly v0.0.0 (/opt/crater/workdir)
[INFO] [stderr] error: environment variable `LD_KEY` not defined
[INFO] [stderr]  --> examples/flags.rs:9:24
[INFO] [stderr]   |
[INFO] [stderr] 9 |   let ld = Client::new(env!("LD_KEY"), &core.handle());
[INFO] [stderr]   |                        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `launchdarkly`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:46:26
[INFO] [stderr]    |
[INFO] [stderr] 46 | pub type Future<T> = Box<StdFuture<Item = T, Error = Error>>;
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StdFuture<Item = T, Error = Error>`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/lib.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | /     error_chain! {
[INFO] [stderr] 34 | |         foreign_links {
[INFO] [stderr] 35 | |             Codec(SerdeError);
[INFO] [stderr] 36 | |             Http(HttpError);
[INFO] [stderr] ...  |
[INFO] [stderr] 39 | |         }
[INFO] [stderr] 40 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/lib.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | /     error_chain! {
[INFO] [stderr] 34 | |         foreign_links {
[INFO] [stderr] 35 | |             Codec(SerdeError);
[INFO] [stderr] 36 | |             Http(HttpError);
[INFO] [stderr] ...  |
[INFO] [stderr] 39 | |         }
[INFO] [stderr] 40 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "55c56f348dc20df270c3376617e6ef62e37e1e61aae2522fbadc61876febb78b"`
[INFO] running `"docker" "rm" "-f" "55c56f348dc20df270c3376617e6ef62e37e1e61aae2522fbadc61876febb78b"`
[INFO] [stdout] 55c56f348dc20df270c3376617e6ef62e37e1e61aae2522fbadc61876febb78b