[INFO] fetching crate streaming-json-completer 0.2.0-dev...
[INFO] checking streaming-json-completer-0.2.0-dev against try#c86ec274072509d26d0ee52682a0c94ed012ed89 for pr-153027
[INFO] extracting crate streaming-json-completer 0.2.0-dev into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate streaming-json-completer 0.2.0-dev
[INFO] finished tweaking crates.io crate streaming-json-completer 0.2.0-dev
[INFO] tweaked toml for crates.io crate streaming-json-completer 0.2.0-dev written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate streaming-json-completer 0.2.0-dev on toolchain c86ec274072509d26d0ee52682a0c94ed012ed89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 84 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.8.2)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.10.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a7600d3f30440422edd7eebe53dc9a14fb211cfabc5dc2d37e86576c3126c3d
[INFO] running `Command { std: "docker" "start" "-a" "7a7600d3f30440422edd7eebe53dc9a14fb211cfabc5dc2d37e86576c3126c3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a7600d3f30440422edd7eebe53dc9a14fb211cfabc5dc2d37e86576c3126c3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a7600d3f30440422edd7eebe53dc9a14fb211cfabc5dc2d37e86576c3126c3d", kill_on_drop: false }`
[INFO] [stdout] 7a7600d3f30440422edd7eebe53dc9a14fb211cfabc5dc2d37e86576c3126c3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+c86ec274072509d26d0ee52682a0c94ed012ed89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47acba337fece47c9d5bb53d4760c5c3ed3bd0f17370bfe3b3847c0ad14e2b33
[INFO] running `Command { std: "docker" "start" "-a" "47acba337fece47c9d5bb53d4760c5c3ed3bd0f17370bfe3b3847c0ad14e2b33", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling libc v0.2.184
[INFO] [stderr]     Checking csv-core v0.1.13
[INFO] [stderr]     Checking half v1.8.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking arbitrary v1.4.2
[INFO] [stderr]     Checking combine v4.6.7
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling jobserver v0.1.34
[INFO] [stderr]    Compiling cc v1.2.60
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]     Checking csv v1.4.0
[INFO] [stderr]    Compiling libfuzzer-sys v0.4.12
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stderr]     Checking arbitrary-json v0.1.1
[INFO] [stderr]     Checking streaming-json-completer v0.2.0-dev (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> tests/static_test.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |             dbg!(complete_json(input));
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 33 |             let _ = dbg!(complete_json(input));
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.06s
[INFO] running `Command { std: "docker" "inspect" "47acba337fece47c9d5bb53d4760c5c3ed3bd0f17370bfe3b3847c0ad14e2b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47acba337fece47c9d5bb53d4760c5c3ed3bd0f17370bfe3b3847c0ad14e2b33", kill_on_drop: false }`
[INFO] [stdout] 47acba337fece47c9d5bb53d4760c5c3ed3bd0f17370bfe3b3847c0ad14e2b33