[INFO] fetching crate flats 0.1.0...
[INFO] testing flats-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate flats 0.1.0 into /workspace/builds/worker-53/source
[INFO] validating manifest of crates.io crate flats 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flats 0.1.0
[INFO] finished tweaking crates.io crate flats 0.1.0
[INFO] tweaked toml for crates.io crate flats 0.1.0 written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fb2c2f02e7c0b8fc46f2575f51f83875b20dca3030ae9397d4a77880bc1a44f
[INFO] running `Command { std: "docker" "start" "-a" "0fb2c2f02e7c0b8fc46f2575f51f83875b20dca3030ae9397d4a77880bc1a44f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fb2c2f02e7c0b8fc46f2575f51f83875b20dca3030ae9397d4a77880bc1a44f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fb2c2f02e7c0b8fc46f2575f51f83875b20dca3030ae9397d4a77880bc1a44f", kill_on_drop: false }`
[INFO] [stdout] 0fb2c2f02e7c0b8fc46f2575f51f83875b20dca3030ae9397d4a77880bc1a44f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a770c3e1d51dab78ded9dca210dc6498143782e037e5ec8578e69ee4efb34184
[INFO] running `Command { std: "docker" "start" "-a" "a770c3e1d51dab78ded9dca210dc6498143782e037e5ec8578e69ee4efb34184", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde_json v1.0.67
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling flats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.86s
[INFO] running `Command { std: "docker" "inspect" "a770c3e1d51dab78ded9dca210dc6498143782e037e5ec8578e69ee4efb34184", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a770c3e1d51dab78ded9dca210dc6498143782e037e5ec8578e69ee4efb34184", kill_on_drop: false }`
[INFO] [stdout] a770c3e1d51dab78ded9dca210dc6498143782e037e5ec8578e69ee4efb34184
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d46ba1075945526a66daa2cd2e4c13959d413976127ed10a1baab626865dd2e9
[INFO] running `Command { std: "docker" "start" "-a" "d46ba1075945526a66daa2cd2e4c13959d413976127ed10a1baab626865dd2e9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling flats v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.81s
[INFO] running `Command { std: "docker" "inspect" "d46ba1075945526a66daa2cd2e4c13959d413976127ed10a1baab626865dd2e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d46ba1075945526a66daa2cd2e4c13959d413976127ed10a1baab626865dd2e9", kill_on_drop: false }`
[INFO] [stdout] d46ba1075945526a66daa2cd2e4c13959d413976127ed10a1baab626865dd2e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1a7da8c8272173e401b0821434a69fe871b247959d861c6374aca1e9926cc89c
[INFO] running `Command { std: "docker" "start" "-a" "1a7da8c8272173e401b0821434a69fe871b247959d861c6374aca1e9926cc89c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/flats-524fa5cf01d255a8)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test scalar::tests::null_display ... ok
[INFO] [stdout] test scalar::tests::bool_display ... ok
[INFO] [stdout] test scalar::tests::number_display ... ok
[INFO] [stdout] test scalar::tests::string_display ... ok
[INFO] [stdout] test tests::flattens_nested_maps ... ok
[INFO] [stdout] test tests::flattens_to_serializable ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests flats
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.63s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1a7da8c8272173e401b0821434a69fe871b247959d861c6374aca1e9926cc89c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a7da8c8272173e401b0821434a69fe871b247959d861c6374aca1e9926cc89c", kill_on_drop: false }`
[INFO] [stdout] 1a7da8c8272173e401b0821434a69fe871b247959d861c6374aca1e9926cc89c