[INFO] fetching crate json-writer 0.4.0...
[INFO] testing json-writer-0.4.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-7
[INFO] extracting crate json-writer 0.4.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate json-writer 0.4.0
[INFO] finished tweaking crates.io crate json-writer 0.4.0
[INFO] tweaked toml for crates.io crate json-writer 0.4.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate json-writer 0.4.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00cad4ddde2d57b25b15a7b2645bf34be853464bf2b2b81bdec797eee8ba33aa
[INFO] running `Command { std: "docker" "start" "-a" "00cad4ddde2d57b25b15a7b2645bf34be853464bf2b2b81bdec797eee8ba33aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00cad4ddde2d57b25b15a7b2645bf34be853464bf2b2b81bdec797eee8ba33aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00cad4ddde2d57b25b15a7b2645bf34be853464bf2b2b81bdec797eee8ba33aa", kill_on_drop: false }`
[INFO] [stdout] 00cad4ddde2d57b25b15a7b2645bf34be853464bf2b2b81bdec797eee8ba33aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e1ea5a79a39f23ec75146c09bfcf0f43bce02bdb90b312538ba17cace58d076
[INFO] running `Command { std: "docker" "start" "-a" "3e1ea5a79a39f23ec75146c09bfcf0f43bce02bdb90b312538ba17cace58d076", kill_on_drop: false }`
[INFO] [stderr]    Compiling json-writer v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.13s
[INFO] running `Command { std: "docker" "inspect" "3e1ea5a79a39f23ec75146c09bfcf0f43bce02bdb90b312538ba17cace58d076", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e1ea5a79a39f23ec75146c09bfcf0f43bce02bdb90b312538ba17cace58d076", kill_on_drop: false }`
[INFO] [stdout] 3e1ea5a79a39f23ec75146c09bfcf0f43bce02bdb90b312538ba17cace58d076
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ae6f84d2fcdff1cb439af58dbe7cd6502c527c970c816313d97c8ef6eee0767
[INFO] running `Command { std: "docker" "start" "-a" "3ae6f84d2fcdff1cb439af58dbe7cd6502c527c970c816313d97c8ef6eee0767", kill_on_drop: false }`
[INFO] [stderr]    Compiling json-writer v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "3ae6f84d2fcdff1cb439af58dbe7cd6502c527c970c816313d97c8ef6eee0767", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ae6f84d2fcdff1cb439af58dbe7cd6502c527c970c816313d97c8ef6eee0767", kill_on_drop: false }`
[INFO] [stdout] 3ae6f84d2fcdff1cb439af58dbe7cd6502c527c970c816313d97c8ef6eee0767
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 90a624771f5230cdd8eca00c69c32aa5dd580842395321b1c161bd77121be8fd
[INFO] running `Command { std: "docker" "start" "-a" "90a624771f5230cdd8eca00c69c32aa5dd580842395321b1c161bd77121be8fd", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/json_writer-1b12b4883feb7b26)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test tests::test_array ... ok
[INFO] [stdout] test tests::test_array_range ... ok
[INFO] [stdout] test tests::test_basic_example ... ok
[INFO] [stdout] test tests::test_dtoa ... ok
[INFO] [stdout] test tests::test_encoding ... ok
[INFO] [stdout] test tests::test_duplicate_keys ... ok
[INFO] [stdout] test tests::test_misc_examples ... ok
[INFO] [stdout] test tests::test_numbers ... ok
[INFO] [stdout] test tests::test_object ... ok
[INFO] [stdout] test tests::test_pretty ... ok
[INFO] [stdout] test tests::test_strings ... ok
[INFO] [stdout] test tests::test_string_writer ... ok
[INFO] [stdout] test tests::test_flush ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests json_writer
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test src/lib.rs - (line 103) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 80) ... ok
[INFO] [stdout] test src/lib.rs - (line 118) ... ok
[INFO] [stdout] test src/lib.rs - (line 13) ... ok
[INFO] [stdout] test src/lib.rs - (line 26) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.19s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "90a624771f5230cdd8eca00c69c32aa5dd580842395321b1c161bd77121be8fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90a624771f5230cdd8eca00c69c32aa5dd580842395321b1c161bd77121be8fd", kill_on_drop: false }`
[INFO] [stdout] 90a624771f5230cdd8eca00c69c32aa5dd580842395321b1c161bd77121be8fd