[INFO] fetching crate json-writer 0.2.0...
[INFO] testing json-writer-0.2.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate json-writer 0.2.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate json-writer 0.2.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate json-writer 0.2.0
[INFO] finished tweaking crates.io crate json-writer 0.2.0
[INFO] tweaked toml for crates.io crate json-writer 0.2.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd2cb35b674b5072764edd56652eaae3fd8e1920e7500acbd7e962b5f0371f5b
[INFO] running `Command { std: "docker" "start" "-a" "fd2cb35b674b5072764edd56652eaae3fd8e1920e7500acbd7e962b5f0371f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd2cb35b674b5072764edd56652eaae3fd8e1920e7500acbd7e962b5f0371f5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd2cb35b674b5072764edd56652eaae3fd8e1920e7500acbd7e962b5f0371f5b", kill_on_drop: false }`
[INFO] [stdout] fd2cb35b674b5072764edd56652eaae3fd8e1920e7500acbd7e962b5f0371f5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f37cd300057f5d76444a32134efb0cde2cced9eedf1e28ed0fb937df4a3821f0
[INFO] running `Command { std: "docker" "start" "-a" "f37cd300057f5d76444a32134efb0cde2cced9eedf1e28ed0fb937df4a3821f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling json-writer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "f37cd300057f5d76444a32134efb0cde2cced9eedf1e28ed0fb937df4a3821f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f37cd300057f5d76444a32134efb0cde2cced9eedf1e28ed0fb937df4a3821f0", kill_on_drop: false }`
[INFO] [stdout] f37cd300057f5d76444a32134efb0cde2cced9eedf1e28ed0fb937df4a3821f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 88713d3324edd9f7de9736ab265873b80dae31d5b7e451f139d15a3836b163fd
[INFO] running `Command { std: "docker" "start" "-a" "88713d3324edd9f7de9736ab265873b80dae31d5b7e451f139d15a3836b163fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling json-writer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "88713d3324edd9f7de9736ab265873b80dae31d5b7e451f139d15a3836b163fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88713d3324edd9f7de9736ab265873b80dae31d5b7e451f139d15a3836b163fd", kill_on_drop: false }`
[INFO] [stdout] 88713d3324edd9f7de9736ab265873b80dae31d5b7e451f139d15a3836b163fd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dbf7672ecd08bace4c51fb309dfe61309478e05a84773217f8436173ade620f4
[INFO] running `Command { std: "docker" "start" "-a" "dbf7672ecd08bace4c51fb309dfe61309478e05a84773217f8436173ade620f4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/json_writer-603c67dacd556bad)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test test_array ... ok
[INFO] [stdout] test test_basic_example ... ok
[INFO] [stdout] test test_array_range ... ok
[INFO] [stdout] test test_dtoa ... ok
[INFO] [stdout] test test_misc_examples ... ok
[INFO] [stdout] test test_numbers ... ok
[INFO] [stdout] test test_object ... ok
[INFO] [stdout] test test_duplicate_keys ... ok
[INFO] [stdout] test test_strings ... ok
[INFO] [stdout] test test_flush ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.26s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests json-writer
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - (line 99) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 77) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 10) ... ok
[INFO] [stdout] test src/lib.rs - (line 114) ... ok
[INFO] [stdout] test src/lib.rs - (line 23) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 77) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `JSONArrayWriter`
[INFO] [stdout]  --> src/lib.rs:80:18
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let mut array = JSONArrayWriter::new(&mut buffer);
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]   |
[INFO] [stdout] 2 | use json_writer::JSONArrayWriter;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 77)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 4 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.32s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "dbf7672ecd08bace4c51fb309dfe61309478e05a84773217f8436173ade620f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbf7672ecd08bace4c51fb309dfe61309478e05a84773217f8436173ade620f4", kill_on_drop: false }`
[INFO] [stdout] dbf7672ecd08bace4c51fb309dfe61309478e05a84773217f8436173ade620f4