[INFO] crate trace-context 0.1.0 is already in cache
[INFO] extracting crate trace-context 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/trace-context/0.1.0
[INFO] extracting crate trace-context 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/trace-context/0.1.0
[INFO] validating manifest of trace-context-0.1.0 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 trace-context-0.1.0 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 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-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/reg/trace-context/0.1.0/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 trace-context-0.1.0 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] c8126a35d04280b538789ecda79b8f7160881c7c881b3035655056715926d2c4
[INFO] running `"docker" "start" "-a" "c8126a35d04280b538789ecda79b8f7160881c7c881b3035655056715926d2c4"`
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling http v0.1.18
[INFO] [stderr]    Compiling trace-context v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.53s
[INFO] running `"docker" "inspect" "c8126a35d04280b538789ecda79b8f7160881c7c881b3035655056715926d2c4"`
[INFO] running `"docker" "rm" "-f" "c8126a35d04280b538789ecda79b8f7160881c7c881b3035655056715926d2c4"`
[INFO] [stdout] c8126a35d04280b538789ecda79b8f7160881c7c881b3035655056715926d2c4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6bc60f44b8ae29a33822274afb1e110ea2fe5b134e693518962c19359792c3a4
[INFO] running `"docker" "start" "-a" "6bc60f44b8ae29a33822274afb1e110ea2fe5b134e693518962c19359792c3a4"`
[INFO] [stderr]    Compiling trace-context v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `"docker" "inspect" "6bc60f44b8ae29a33822274afb1e110ea2fe5b134e693518962c19359792c3a4"`
[INFO] running `"docker" "rm" "-f" "6bc60f44b8ae29a33822274afb1e110ea2fe5b134e693518962c19359792c3a4"`
[INFO] [stdout] 6bc60f44b8ae29a33822274afb1e110ea2fe5b134e693518962c19359792c3a4
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 3a1c85b13b6f246013a2eaf83a6cd8db170dfee1270f4c51f1ef0e0b5ff5ad56
[INFO] running `"docker" "start" "-a" "3a1c85b13b6f246013a2eaf83a6cd8db170dfee1270f4c51f1ef0e0b5ff5ad56"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/trace_context-b1a63ae2777a5662
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test::extract::no_header ... ok
[INFO] [stderr]    Doc-tests trace-context
[INFO] [stdout] test test::extract::default ... ok
[INFO] [stdout] test test::extract::not_sampled ... ok
[INFO] [stdout] test test::extract::sampled ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs -  (line 4) ... 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] test src/lib.rs - TraceContext::extract (line 37) ... ok
[INFO] [stdout] test src/lib.rs - TraceContext::inject (line 82) ... 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" "3a1c85b13b6f246013a2eaf83a6cd8db170dfee1270f4c51f1ef0e0b5ff5ad56"`
[INFO] running `"docker" "rm" "-f" "3a1c85b13b6f246013a2eaf83a6cd8db170dfee1270f4c51f1ef0e0b5ff5ad56"`
[INFO] [stdout] 3a1c85b13b6f246013a2eaf83a6cd8db170dfee1270f4c51f1ef0e0b5ff5ad56