[INFO] fetching crate mazzaroth-xdr 0.8.2...
[INFO] checking mazzaroth-xdr-0.8.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate mazzaroth-xdr 0.8.2 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mazzaroth-xdr 0.8.2 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 mazzaroth-xdr 0.8.2
[INFO] finished tweaking crates.io crate mazzaroth-xdr 0.8.2
[INFO] tweaked toml for crates.io crate mazzaroth-xdr 0.8.2 written to /workspace/builds/worker-2-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 10 packages
[INFO] [stderr]       Adding base64 v0.13.1 (latest: v0.22.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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 xdr-rs-serialize-derive v0.3.1
[INFO] [stderr]   Downloaded xdr-rs-serialize v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 4bb74737bf46ff5041fb4349a5f98fe83f6043c3c97bdb2160816a79d42da329
[INFO] running `Command { std: "docker" "start" "-a" "4bb74737bf46ff5041fb4349a5f98fe83f6043c3c97bdb2160816a79d42da329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4bb74737bf46ff5041fb4349a5f98fe83f6043c3c97bdb2160816a79d42da329", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bb74737bf46ff5041fb4349a5f98fe83f6043c3c97bdb2160816a79d42da329", kill_on_drop: false }`
[INFO] [stdout] 4bb74737bf46ff5041fb4349a5f98fe83f6043c3c97bdb2160816a79d42da329
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] f7c322f90e3a43439dad3fce7a26ec5f5eb88a04672bd9e41116e1329478b948
[INFO] running `Command { std: "docker" "start" "-a" "f7c322f90e3a43439dad3fce7a26ec5f5eb88a04672bd9e41116e1329478b948", kill_on_drop: false }`
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]    Compiling xdr-rs-serialize-derive v0.3.1
[INFO] [stderr]     Checking xdr-rs-serialize v0.3.1
[INFO] [stderr]     Checking mazzaroth-xdr v0.8.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "f7c322f90e3a43439dad3fce7a26ec5f5eb88a04672bd9e41116e1329478b948", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7c322f90e3a43439dad3fce7a26ec5f5eb88a04672bd9e41116e1329478b948", kill_on_drop: false }`
[INFO] [stdout] f7c322f90e3a43439dad3fce7a26ec5f5eb88a04672bd9e41116e1329478b948
[INFO] checking mazzaroth-xdr-0.8.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate mazzaroth-xdr 0.8.2 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate mazzaroth-xdr 0.8.2 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 mazzaroth-xdr 0.8.2
[INFO] finished tweaking crates.io crate mazzaroth-xdr 0.8.2
[INFO] tweaked toml for crates.io crate mazzaroth-xdr 0.8.2 written to /workspace/builds/worker-2-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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 32443c57ee5d2ee95eacfcf38787fd82e3098d273bf3b1933c56bd15beb0d450
[INFO] running `Command { std: "docker" "start" "-a" "32443c57ee5d2ee95eacfcf38787fd82e3098d273bf3b1933c56bd15beb0d450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32443c57ee5d2ee95eacfcf38787fd82e3098d273bf3b1933c56bd15beb0d450", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32443c57ee5d2ee95eacfcf38787fd82e3098d273bf3b1933c56bd15beb0d450", kill_on_drop: false }`
[INFO] [stdout] 32443c57ee5d2ee95eacfcf38787fd82e3098d273bf3b1933c56bd15beb0d450
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] ae620b9fc75caef4290357a1589153ed465f8ff16bcd500282d639e6d3507f18
[INFO] running `Command { std: "docker" "start" "-a" "ae620b9fc75caef4290357a1589153ed465f8ff16bcd500282d639e6d3507f18", kill_on_drop: false }`
[INFO] [stderr]     Checking json v0.12.4
[INFO] [stderr]    Compiling xdr-rs-serialize-derive v0.3.1
[INFO] [stderr]     Checking xdr-rs-serialize v0.3.1
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/xdr-rs-serialize-0.3.1/src/de.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 210 | /             match json::parse(&jval.to_string()) {
[INFO] [stdout] 211 | |                 Ok(res) => return Self::read_json(res),
[INFO] [stdout] 212 | |                 Err(_) => return Err(Error::invalid_json()),
[INFO] [stdout] 213 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[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 `xdr-rs-serialize` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ae620b9fc75caef4290357a1589153ed465f8ff16bcd500282d639e6d3507f18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae620b9fc75caef4290357a1589153ed465f8ff16bcd500282d639e6d3507f18", kill_on_drop: false }`
[INFO] [stdout] ae620b9fc75caef4290357a1589153ed465f8ff16bcd500282d639e6d3507f18