[INFO] crate simbol-server 1.1.0 is already in cache
[INFO] extracting crate simbol-server 1.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/simbol-server/1.1.0
[INFO] extracting crate simbol-server 1.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/simbol-server/1.1.0
[INFO] validating manifest of simbol-server-1.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of simbol-server-1.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing simbol-server-1.1.0
[INFO] finished frobbing simbol-server-1.1.0
[INFO] frobbed toml for simbol-server-1.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/simbol-server/1.1.0/Cargo.toml
[INFO] started frobbing simbol-server-1.1.0
[INFO] finished frobbing simbol-server-1.1.0
[INFO] frobbed toml for simbol-server-1.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/simbol-server/1.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing simbol-server-1.1.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/simbol-server/1.1.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 324f9b5e62dbe8e99b600e3a4f158da503ab7c892a2ab3b3c711691a6b304ffd
[INFO] running `"docker" "start" "-a" "324f9b5e62dbe8e99b600e3a4f158da503ab7c892a2ab3b3c711691a6b304ffd"`
[INFO] [stderr]    Compiling ws v0.7.9
[INFO] [stderr]    Compiling iron v0.6.0
[INFO] [stderr]    Compiling mount v0.4.0
[INFO] [stderr]    Compiling iron-cors v0.8.0
[INFO] [stderr]    Compiling router v0.6.0
[INFO] [stderr]    Compiling staticfile v0.5.0
[INFO] [stderr]    Compiling simbol-server v1.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/multivp.rs:82:37
[INFO] [stderr]    |
[INFO] [stderr] 82 |                                     connection.send(msg);
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/multivp.rs:112:21
[INFO] [stderr]     |
[INFO] [stderr] 112 |                     connection.send(msg);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.19s
[INFO] running `"docker" "inspect" "324f9b5e62dbe8e99b600e3a4f158da503ab7c892a2ab3b3c711691a6b304ffd"`
[INFO] running `"docker" "rm" "-f" "324f9b5e62dbe8e99b600e3a4f158da503ab7c892a2ab3b3c711691a6b304ffd"`
[INFO] [stdout] 324f9b5e62dbe8e99b600e3a4f158da503ab7c892a2ab3b3c711691a6b304ffd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/simbol-server/1.1.0:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 744cd180043ee04c31b15601ac34145bd99322ac460af4e08ccfbbb290164d0d
[INFO] running `"docker" "start" "-a" "744cd180043ee04c31b15601ac34145bd99322ac460af4e08ccfbbb290164d0d"`
[INFO] [stderr]    Compiling simbol-server v1.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/multivp.rs:82:37
[INFO] [stderr]    |
[INFO] [stderr] 82 |                                     connection.send(msg);
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/multivp.rs:112:21
[INFO] [stderr]     |
[INFO] [stderr] 112 |                     connection.send(msg);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `"docker" "inspect" "744cd180043ee04c31b15601ac34145bd99322ac460af4e08ccfbbb290164d0d"`
[INFO] running `"docker" "rm" "-f" "744cd180043ee04c31b15601ac34145bd99322ac460af4e08ccfbbb290164d0d"`
[INFO] [stdout] 744cd180043ee04c31b15601ac34145bd99322ac460af4e08ccfbbb290164d0d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/simbol-server/1.1.0:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 25f3d4a540813070ce284a890aa04a792fda0a6d8e36b8d7333dadffef9fb352
[INFO] running `"docker" "start" "-a" "25f3d4a540813070ce284a890aa04a792fda0a6d8e36b8d7333dadffef9fb352"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/simbol_server-71a66b345eb23196
[INFO] [stderr]    Doc-tests simbol-server
[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] [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" "25f3d4a540813070ce284a890aa04a792fda0a6d8e36b8d7333dadffef9fb352"`
[INFO] running `"docker" "rm" "-f" "25f3d4a540813070ce284a890aa04a792fda0a6d8e36b8d7333dadffef9fb352"`
[INFO] [stdout] 25f3d4a540813070ce284a890aa04a792fda0a6d8e36b8d7333dadffef9fb352