[INFO] fetching crate flat-json 0.1.0...
[INFO] testing flat-json-0.1.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate flat-json 0.1.0 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate flat-json 0.1.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flat-json 0.1.0
[INFO] finished tweaking crates.io crate flat-json 0.1.0
[INFO] tweaked toml for crates.io crate flat-json 0.1.0 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 051342f358c9b0e176bc519d08a1ecba0ac8ab952ec47cc233d0c8e624fba347
[INFO] running `Command { std: "docker" "start" "-a" "051342f358c9b0e176bc519d08a1ecba0ac8ab952ec47cc233d0c8e624fba347", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "051342f358c9b0e176bc519d08a1ecba0ac8ab952ec47cc233d0c8e624fba347", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "051342f358c9b0e176bc519d08a1ecba0ac8ab952ec47cc233d0c8e624fba347", kill_on_drop: false }`
[INFO] [stdout] 051342f358c9b0e176bc519d08a1ecba0ac8ab952ec47cc233d0c8e624fba347
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 786d1d5277241350ad1ddd337cfc872cef3aa2f4808beb0bf587a0f69398ed5a
[INFO] running `Command { std: "docker" "start" "-a" "786d1d5277241350ad1ddd337cfc872cef3aa2f4808beb0bf587a0f69398ed5a", kill_on_drop: false }`
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr]    Compiling flat-json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.20s
[INFO] running `Command { std: "docker" "inspect" "786d1d5277241350ad1ddd337cfc872cef3aa2f4808beb0bf587a0f69398ed5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "786d1d5277241350ad1ddd337cfc872cef3aa2f4808beb0bf587a0f69398ed5a", kill_on_drop: false }`
[INFO] [stdout] 786d1d5277241350ad1ddd337cfc872cef3aa2f4808beb0bf587a0f69398ed5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 047a418773c240430e184f96352202db48237548be1f1bddfc020fc6641306b6
[INFO] running `Command { std: "docker" "start" "-a" "047a418773c240430e184f96352202db48237548be1f1bddfc020fc6641306b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling flat-json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "047a418773c240430e184f96352202db48237548be1f1bddfc020fc6641306b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "047a418773c240430e184f96352202db48237548be1f1bddfc020fc6641306b6", kill_on_drop: false }`
[INFO] [stdout] 047a418773c240430e184f96352202db48237548be1f1bddfc020fc6641306b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] aa749de61a83a012841344b31eb8024a603734d5af1f4d98d8487057d7a2c99a
[INFO] running `Command { std: "docker" "start" "-a" "aa749de61a83a012841344b31eb8024a603734d5af1f4d98d8487057d7a2c99a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/flat_json-2bbbd5c45ad2293d)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "aa749de61a83a012841344b31eb8024a603734d5af1f4d98d8487057d7a2c99a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa749de61a83a012841344b31eb8024a603734d5af1f4d98d8487057d7a2c99a", kill_on_drop: false }`
[INFO] [stdout] aa749de61a83a012841344b31eb8024a603734d5af1f4d98d8487057d7a2c99a