[INFO] fetching crate json-writer 0.2.0...
[INFO] testing json-writer-0.2.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate json-writer 0.2.0 into /workspace/builds/worker-26/source
[INFO] validating manifest of crates.io crate json-writer 0.2.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-26/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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" "+1.60.0" "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-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a598e05a1b5ba2726262e3547ca7ec9d4e26668ac2a6ca46cdd63f1bee394a7
[INFO] running `Command { std: "docker" "start" "-a" "7a598e05a1b5ba2726262e3547ca7ec9d4e26668ac2a6ca46cdd63f1bee394a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a598e05a1b5ba2726262e3547ca7ec9d4e26668ac2a6ca46cdd63f1bee394a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a598e05a1b5ba2726262e3547ca7ec9d4e26668ac2a6ca46cdd63f1bee394a7", kill_on_drop: false }`
[INFO] [stdout] 7a598e05a1b5ba2726262e3547ca7ec9d4e26668ac2a6ca46cdd63f1bee394a7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 359bb7e493ea4b0d5e3bfac320f412879dd9adb7af3583b32579b145f11bf672
[INFO] running `Command { std: "docker" "start" "-a" "359bb7e493ea4b0d5e3bfac320f412879dd9adb7af3583b32579b145f11bf672", kill_on_drop: false }`
[INFO] [stderr]    Compiling json-writer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "359bb7e493ea4b0d5e3bfac320f412879dd9adb7af3583b32579b145f11bf672", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "359bb7e493ea4b0d5e3bfac320f412879dd9adb7af3583b32579b145f11bf672", kill_on_drop: false }`
[INFO] [stdout] 359bb7e493ea4b0d5e3bfac320f412879dd9adb7af3583b32579b145f11bf672
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e95deb622a8e9f37fc2a253bf38b4555e429fc652700e3651dc6ea1879ccc9f
[INFO] running `Command { std: "docker" "start" "-a" "2e95deb622a8e9f37fc2a253bf38b4555e429fc652700e3651dc6ea1879ccc9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling json-writer v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "2e95deb622a8e9f37fc2a253bf38b4555e429fc652700e3651dc6ea1879ccc9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e95deb622a8e9f37fc2a253bf38b4555e429fc652700e3651dc6ea1879ccc9f", kill_on_drop: false }`
[INFO] [stdout] 2e95deb622a8e9f37fc2a253bf38b4555e429fc652700e3651dc6ea1879ccc9f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 662b2b9e8b1fe9d79c70a104f3a533e7638f4d87478f630295ada4c329ad8e42
[INFO] running `Command { std: "docker" "start" "-a" "662b2b9e8b1fe9d79c70a104f3a533e7638f4d87478f630295ada4c329ad8e42", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/json_writer-c75396b26fc2036f)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test test_array ... ok
[INFO] [stdout] test test_array_range ... ok
[INFO] [stdout] test test_dtoa ... ok
[INFO] [stdout] test test_duplicate_keys ... ok
[INFO] [stdout] test test_basic_example ... ok
[INFO] [stdout] test test_misc_examples ... ok
[INFO] [stdout] test test_numbers ... ok
[INFO] [stdout] test test_strings ... ok
[INFO] [stdout] test test_object ... 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 0.29s
[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 114) ... ok
[INFO] [stdout] test src/lib.rs - (line 10) ... 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 0.40s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "662b2b9e8b1fe9d79c70a104f3a533e7638f4d87478f630295ada4c329ad8e42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "662b2b9e8b1fe9d79c70a104f3a533e7638f4d87478f630295ada4c329ad8e42", kill_on_drop: false }`
[INFO] [stdout] 662b2b9e8b1fe9d79c70a104f3a533e7638f4d87478f630295ada4c329ad8e42