[INFO] crate trace-context 0.1.0 is already in cache
[INFO] extracting crate trace-context 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/trace-context/0.1.0
[INFO] extracting crate trace-context 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/trace-context/0.1.0
[INFO] validating manifest of trace-context-0.1.0 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 trace-context-0.1.0 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 trace-context-0.1.0
[INFO] finished frobbing trace-context-0.1.0
[INFO] frobbed toml for trace-context-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/trace-context/0.1.0/Cargo.toml
[INFO] started frobbing trace-context-0.1.0
[INFO] finished frobbing trace-context-0.1.0
[INFO] frobbed toml for trace-context-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/trace-context/0.1.0/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 trace-context-0.1.0 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/trace-context/0.1.0:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 76282f043f2d013a839999cb0c56638167665d90a1bc654d39fe5e60fee42480
[INFO] running `"docker" "start" "-a" "76282f043f2d013a839999cb0c56638167665d90a1bc654d39fe5e60fee42480"`
[INFO] [stderr]    Compiling trace-context v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `"docker" "inspect" "76282f043f2d013a839999cb0c56638167665d90a1bc654d39fe5e60fee42480"`
[INFO] running `"docker" "rm" "-f" "76282f043f2d013a839999cb0c56638167665d90a1bc654d39fe5e60fee42480"`
[INFO] [stdout] 76282f043f2d013a839999cb0c56638167665d90a1bc654d39fe5e60fee42480
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/trace-context/0.1.0:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d30e785a2d7cb8b8f40566340caed2b0c31a50a938319193b1804e4d596c74dd
[INFO] running `"docker" "start" "-a" "d30e785a2d7cb8b8f40566340caed2b0c31a50a938319193b1804e4d596c74dd"`
[INFO] [stderr]    Compiling trace-context v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `"docker" "inspect" "d30e785a2d7cb8b8f40566340caed2b0c31a50a938319193b1804e4d596c74dd"`
[INFO] running `"docker" "rm" "-f" "d30e785a2d7cb8b8f40566340caed2b0c31a50a938319193b1804e4d596c74dd"`
[INFO] [stdout] d30e785a2d7cb8b8f40566340caed2b0c31a50a938319193b1804e4d596c74dd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/trace-context/0.1.0:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 3d04874d7684dbfb620feb59ed978a6f90cc125fc9be5e88ee9fa30ee7f5ed27
[INFO] running `"docker" "start" "-a" "3d04874d7684dbfb620feb59ed978a6f90cc125fc9be5e88ee9fa30ee7f5ed27"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/trace_context-cea8a83da1b292b9
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test::extract::not_sampled ... ok
[INFO] [stdout] test test::extract::sampled ... ok
[INFO] [stdout] test test::extract::default ... ok
[INFO] [stdout] test test::extract::no_header ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests trace-context
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - TraceContext::inject (line 82) ... ok
[INFO] [stdout] test src/lib.rs -  (line 4) ... ok
[INFO] [stdout] test src/lib.rs - TraceContext::extract (line 37) ... ok
[INFO] [stdout] test src/lib.rs - TraceContext::sampled (line 137) ... ok
[INFO] [stdout] test src/lib.rs - TraceContext::set_sampled (line 150) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "3d04874d7684dbfb620feb59ed978a6f90cc125fc9be5e88ee9fa30ee7f5ed27"`
[INFO] running `"docker" "rm" "-f" "3d04874d7684dbfb620feb59ed978a6f90cc125fc9be5e88ee9fa30ee7f5ed27"`
[INFO] [stdout] 3d04874d7684dbfb620feb59ed978a6f90cc125fc9be5e88ee9fa30ee7f5ed27