[INFO] fetching crate rbx_xml 0.13.2...
[INFO] checking rbx_xml-0.13.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate rbx_xml 0.13.2 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate rbx_xml 0.13.2 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rbx_xml 0.13.2
[INFO] finished tweaking crates.io crate rbx_xml 0.13.2
[INFO] tweaked toml for crates.io crate rbx_xml 0.13.2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 66 packages
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding encode_unicode v0.3.6 (latest: v1.0.0)
[INFO] [stderr]       Adding env_logger v0.9.3 (latest: v0.11.3)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (latest: v0.3.9)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rbx_reflection v4.5.0
[INFO] [stderr]   Downloaded rbx_reflection_database v0.2.10+roblox-607
[INFO] [stderr]   Downloaded rbx_dom_weak v2.7.0
[INFO] [stderr]   Downloaded rbx_types v1.8.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7d599b208e1756b73ce3b26ab1cd137686982a96dfa8d00ba3652406fdf8f9a9
[INFO] running `Command { std: "docker" "start" "-a" "7d599b208e1756b73ce3b26ab1cd137686982a96dfa8d00ba3652406fdf8f9a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7d599b208e1756b73ce3b26ab1cd137686982a96dfa8d00ba3652406fdf8f9a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d599b208e1756b73ce3b26ab1cd137686982a96dfa8d00ba3652406fdf8f9a9", kill_on_drop: false }`
[INFO] [stdout] 7d599b208e1756b73ce3b26ab1cd137686982a96dfa8d00ba3652406fdf8f9a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] abba9447e4b276ab6a926754fd1abeaa80473d386a05b1492dcfbfdfbf75a438
[INFO] running `Command { std: "docker" "start" "-a" "abba9447e4b276ab6a926754fd1abeaa80473d386a05b1492dcfbfdfbf75a438", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling blake3 v1.5.1
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking similar v2.5.0
[INFO] [stderr]     Checking xml-rs v0.8.20
[INFO] [stderr]     Checking heck v0.4.1
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking rmp v0.8.12
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking env_logger v0.9.3
[INFO] [stderr]     Checking rbx_types v1.8.0
[INFO] [stderr]     Checking rmp-serde v1.1.2
[INFO] [stderr]     Checking insta v1.38.0
[INFO] [stderr]     Checking rbx_reflection v4.5.0
[INFO] [stderr]     Checking rbx_dom_weak v2.7.0
[INFO] [stderr]     Checking rbx_reflection_database v0.2.10+roblox-607
[INFO] [stderr]     Checking rbx_xml v0.13.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.80s
[INFO] running `Command { std: "docker" "inspect" "abba9447e4b276ab6a926754fd1abeaa80473d386a05b1492dcfbfdfbf75a438", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "abba9447e4b276ab6a926754fd1abeaa80473d386a05b1492dcfbfdfbf75a438", kill_on_drop: false }`
[INFO] [stdout] abba9447e4b276ab6a926754fd1abeaa80473d386a05b1492dcfbfdfbf75a438
[INFO] checking rbx_xml-0.13.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate rbx_xml 0.13.2 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate rbx_xml 0.13.2 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rbx_xml 0.13.2
[INFO] finished tweaking crates.io crate rbx_xml 0.13.2
[INFO] tweaked toml for crates.io crate rbx_xml 0.13.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e111a989d2324e71fdc3cee3c88bbd227f5227815a1b3396191f1ea12076934
[INFO] running `Command { std: "docker" "start" "-a" "2e111a989d2324e71fdc3cee3c88bbd227f5227815a1b3396191f1ea12076934", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e111a989d2324e71fdc3cee3c88bbd227f5227815a1b3396191f1ea12076934", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e111a989d2324e71fdc3cee3c88bbd227f5227815a1b3396191f1ea12076934", kill_on_drop: false }`
[INFO] [stdout] 2e111a989d2324e71fdc3cee3c88bbd227f5227815a1b3396191f1ea12076934
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 988b36060b443362e813a5fa8f74c2086a85ed7e8e70391a500db4012651e716
[INFO] running `Command { std: "docker" "start" "-a" "988b36060b443362e813a5fa8f74c2086a85ed7e8e70391a500db4012651e716", kill_on_drop: false }`
[INFO] [stderr]     Checking arrayvec v0.7.4
[INFO] [stderr]     Checking constant_time_eq v0.3.0
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling blake3 v1.5.1
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking console v0.15.8
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]     Checking similar v2.5.0
[INFO] [stderr]     Checking xml-rs v0.8.20
[INFO] [stderr]     Checking heck v0.4.1
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking rmp v0.8.12
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking env_logger v0.9.3
[INFO] [stderr]     Checking rbx_types v1.8.0
[INFO] [stderr]     Checking rmp-serde v1.1.2
[INFO] [stderr]     Checking insta v1.38.0
[INFO] [stderr]     Checking rbx_reflection v4.5.0
[INFO] [stderr]     Checking rbx_dom_weak v2.7.0
[INFO] [stderr]     Checking rbx_reflection_database v0.2.10+roblox-607
[INFO] [stderr]     Checking rbx_xml v0.13.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/tests/formatting.rs:155:14
[INFO] [stdout]     |
[INFO] [stdout] 155 |     .map_err(|e| panic!("cannot deserialize: {}", e))
[INFO] [stdout]     |              ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]     |
[INFO] [stdout] 155 |     .map_err(|e| -> /* Type */ panic!("cannot deserialize: {}", e))
[INFO] [stdout]     |                  +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rbx_xml` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "988b36060b443362e813a5fa8f74c2086a85ed7e8e70391a500db4012651e716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "988b36060b443362e813a5fa8f74c2086a85ed7e8e70391a500db4012651e716", kill_on_drop: false }`
[INFO] [stdout] 988b36060b443362e813a5fa8f74c2086a85ed7e8e70391a500db4012651e716