[INFO] fetching crate tracing-tower 0.0.0...
[INFO] extracting crate tracing-tower 0.0.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/tracing-tower/0.0.0
[INFO] extracting crate tracing-tower 0.0.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/tracing-tower/0.0.0
[INFO] validating manifest of tracing-tower-0.0.0 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 tracing-tower-0.0.0 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 tracing-tower-0.0.0
[INFO] finished frobbing tracing-tower-0.0.0
[INFO] frobbed toml for tracing-tower-0.0.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/tracing-tower/0.0.0/Cargo.toml
[INFO] started frobbing tracing-tower-0.0.0
[INFO] finished frobbing tracing-tower-0.0.0
[INFO] frobbed toml for tracing-tower-0.0.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/tracing-tower/0.0.0/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 tracing-tower-0.0.0 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-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/tracing-tower/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] e51fdf910f7f9c25d45633a3dcd1e03e0058aeccc4a3c52784ed5e776e2dd49d
[INFO] running `"docker" "start" "-a" "e51fdf910f7f9c25d45633a3dcd1e03e0058aeccc4a3c52784ed5e776e2dd49d"`
[INFO] [stderr]    Compiling tracing-tower v0.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `"docker" "inspect" "e51fdf910f7f9c25d45633a3dcd1e03e0058aeccc4a3c52784ed5e776e2dd49d"`
[INFO] running `"docker" "rm" "-f" "e51fdf910f7f9c25d45633a3dcd1e03e0058aeccc4a3c52784ed5e776e2dd49d"`
[INFO] [stdout] e51fdf910f7f9c25d45633a3dcd1e03e0058aeccc4a3c52784ed5e776e2dd49d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/tracing-tower/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4c177d4b5fbc006c74c9ac5c10e0d99942416dbed0a2b1584f0d79e13bc4f01e
[INFO] running `"docker" "start" "-a" "4c177d4b5fbc006c74c9ac5c10e0d99942416dbed0a2b1584f0d79e13bc4f01e"`
[INFO] [stderr]    Compiling tracing-tower v0.0.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `"docker" "inspect" "4c177d4b5fbc006c74c9ac5c10e0d99942416dbed0a2b1584f0d79e13bc4f01e"`
[INFO] running `"docker" "rm" "-f" "4c177d4b5fbc006c74c9ac5c10e0d99942416dbed0a2b1584f0d79e13bc4f01e"`
[INFO] [stdout] 4c177d4b5fbc006c74c9ac5c10e0d99942416dbed0a2b1584f0d79e13bc4f01e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/tracing-tower/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 6d29c174584399a8bda5c2448225f34fb4d3946d73f5eee24d6b8193c277e727
[INFO] running `"docker" "start" "-a" "6d29c174584399a8bda5c2448225f34fb4d3946d73f5eee24d6b8193c277e727"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/tracing_tower-070ac3b95f443067
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tracing-tower
[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" "6d29c174584399a8bda5c2448225f34fb4d3946d73f5eee24d6b8193c277e727"`
[INFO] running `"docker" "rm" "-f" "6d29c174584399a8bda5c2448225f34fb4d3946d73f5eee24d6b8193c277e727"`
[INFO] [stdout] 6d29c174584399a8bda5c2448225f34fb4d3946d73f5eee24d6b8193c277e727