[INFO] fetching crate json-writer 0.4.0...
[INFO] testing json-writer-0.4.0 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate json-writer 0.4.0 into /workspace/builds/worker-3-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-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate json-writer 0.4.0 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e8bc941f27fe904c34525d1db13dbddd35d4d82e610344b308b558100758834
[INFO] running `Command { std: "docker" "start" "-a" "6e8bc941f27fe904c34525d1db13dbddd35d4d82e610344b308b558100758834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e8bc941f27fe904c34525d1db13dbddd35d4d82e610344b308b558100758834", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e8bc941f27fe904c34525d1db13dbddd35d4d82e610344b308b558100758834", kill_on_drop: false }`
[INFO] [stdout] 6e8bc941f27fe904c34525d1db13dbddd35d4d82e610344b308b558100758834
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95d7fb652166f524bdde3eb61872a08c9938d15bf8293ab32aa81ce0a81ee9ba
[INFO] running `Command { std: "docker" "start" "-a" "95d7fb652166f524bdde3eb61872a08c9938d15bf8293ab32aa81ce0a81ee9ba", 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 0.27s
[INFO] running `Command { std: "docker" "inspect" "95d7fb652166f524bdde3eb61872a08c9938d15bf8293ab32aa81ce0a81ee9ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95d7fb652166f524bdde3eb61872a08c9938d15bf8293ab32aa81ce0a81ee9ba", kill_on_drop: false }`
[INFO] [stdout] 95d7fb652166f524bdde3eb61872a08c9938d15bf8293ab32aa81ce0a81ee9ba
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b4ad4ff092995cb181b764e3579e207874cf3ce55e140532cb8da0942a1f337
[INFO] running `Command { std: "docker" "start" "-a" "3b4ad4ff092995cb181b764e3579e207874cf3ce55e140532cb8da0942a1f337", 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 1.04s
[INFO] running `Command { std: "docker" "inspect" "3b4ad4ff092995cb181b764e3579e207874cf3ce55e140532cb8da0942a1f337", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4ad4ff092995cb181b764e3579e207874cf3ce55e140532cb8da0942a1f337", kill_on_drop: false }`
[INFO] [stdout] 3b4ad4ff092995cb181b764e3579e207874cf3ce55e140532cb8da0942a1f337
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3361458850b1f3bc11b1a2045f0a21759eafed9ff36c7264535b10c0d92df23c
[INFO] running `Command { std: "docker" "start" "-a" "3361458850b1f3bc11b1a2045f0a21759eafed9ff36c7264535b10c0d92df23c", 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-d6da8be1b1359906)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test tests::test_encoding ... ok
[INFO] [stdout] test tests::test_dtoa ... ok
[INFO] [stdout] test tests::test_duplicate_keys ... ok
[INFO] [stdout] test tests::test_array ... ok
[INFO] [stdout] test tests::test_basic_example ... ok
[INFO] [stdout] test tests::test_array_range ... ok
[INFO] [stdout] test tests::test_object ... ok
[INFO] [stdout] test tests::test_pretty ... ok
[INFO] [stdout] test tests::test_string_writer ... ok
[INFO] [stdout] test tests::test_misc_examples ... ok
[INFO] [stdout] test tests::test_numbers ... ok
[INFO] [stdout] test tests::test_strings ... ok
[INFO] [stdout] test tests::test_flush ... ok
[INFO] [stderr]    Doc-tests json_writer
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.34s
[INFO] [stdout] 
[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 26) ... ok
[INFO] [stdout] test src/lib.rs - (line 118) ... ok
[INFO] [stdout] test src/lib.rs - (line 80) ... ok
[INFO] [stdout] test src/lib.rs - (line 13) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.64s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3361458850b1f3bc11b1a2045f0a21759eafed9ff36c7264535b10c0d92df23c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3361458850b1f3bc11b1a2045f0a21759eafed9ff36c7264535b10c0d92df23c", kill_on_drop: false }`
[INFO] [stdout] 3361458850b1f3bc11b1a2045f0a21759eafed9ff36c7264535b10c0d92df23c