[INFO] fetching crate field_block 0.3.0...
[INFO] checking field_block-0.3.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate field_block 0.3.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate field_block 0.3.0 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 field_block 0.3.0
[INFO] finished tweaking crates.io crate field_block 0.3.0
[INFO] tweaked toml for crates.io crate field_block 0.3.0 written to /workspace/builds/worker-0-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 2 packages
[INFO] [stderr]       Adding octets v0.2.0 (latest: v0.3.0)
[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 octets v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 591029a8dfe139f3fb41d5b610f338368bdf2fef092e1f211baf1def41149de2
[INFO] running `Command { std: "docker" "start" "-a" "591029a8dfe139f3fb41d5b610f338368bdf2fef092e1f211baf1def41149de2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "591029a8dfe139f3fb41d5b610f338368bdf2fef092e1f211baf1def41149de2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "591029a8dfe139f3fb41d5b610f338368bdf2fef092e1f211baf1def41149de2", kill_on_drop: false }`
[INFO] [stdout] 591029a8dfe139f3fb41d5b610f338368bdf2fef092e1f211baf1def41149de2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 15564d5468e2dcb41e11cf55a6027f4137c228ba2d0b6a3f721ebab25a05683f
[INFO] running `Command { std: "docker" "start" "-a" "15564d5468e2dcb41e11cf55a6027f4137c228ba2d0b6a3f721ebab25a05683f", kill_on_drop: false }`
[INFO] [stderr]     Checking octets v0.2.0
[INFO] [stderr]     Checking field_block v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "15564d5468e2dcb41e11cf55a6027f4137c228ba2d0b6a3f721ebab25a05683f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15564d5468e2dcb41e11cf55a6027f4137c228ba2d0b6a3f721ebab25a05683f", kill_on_drop: false }`
[INFO] [stdout] 15564d5468e2dcb41e11cf55a6027f4137c228ba2d0b6a3f721ebab25a05683f
[INFO] checking field_block-0.3.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate field_block 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate field_block 0.3.0 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 field_block 0.3.0
[INFO] finished tweaking crates.io crate field_block 0.3.0
[INFO] tweaked toml for crates.io crate field_block 0.3.0 written to /workspace/builds/worker-0-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-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6def023e60ad51b3549b9402baeb220cf6cdb6df435317802cc701888877202
[INFO] running `Command { std: "docker" "start" "-a" "c6def023e60ad51b3549b9402baeb220cf6cdb6df435317802cc701888877202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6def023e60ad51b3549b9402baeb220cf6cdb6df435317802cc701888877202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6def023e60ad51b3549b9402baeb220cf6cdb6df435317802cc701888877202", kill_on_drop: false }`
[INFO] [stdout] c6def023e60ad51b3549b9402baeb220cf6cdb6df435317802cc701888877202
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52a9d60261490ef93bbc707801a000014f7983708a98a3b662621709e63a0d5c
[INFO] running `Command { std: "docker" "start" "-a" "52a9d60261490ef93bbc707801a000014f7983708a98a3b662621709e63a0d5c", kill_on_drop: false }`
[INFO] [stderr]     Checking octets v0.2.0
[INFO] [stderr]     Checking field_block v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/field.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 | /                 match x {
[INFO] [stdout] 128 | |                     U64::Fixed(x) => {
[INFO] [stdout] 129 | |                         if *x != y {
[INFO] [stdout] 130 | |                             return Err(ToValuesError::InvalidValue(self.name().clone()));
[INFO] [stdout] ...   |
[INFO] [stdout] 142 | |                     }
[INFO] [stdout] 143 | |                 };
[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] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/field.rs:127:17
[INFO] [stdout]     |
[INFO] [stdout] 127 | /                 match x {
[INFO] [stdout] 128 | |                     U64::Fixed(x) => {
[INFO] [stdout] 129 | |                         if *x != y {
[INFO] [stdout] 130 | |                             return Err(ToValuesError::InvalidValue(self.name().clone()));
[INFO] [stdout] ...   |
[INFO] [stdout] 142 | |                     }
[INFO] [stdout] 143 | |                 };
[INFO] [stdout]     | |_________________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `field_block` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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 `field_block` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "52a9d60261490ef93bbc707801a000014f7983708a98a3b662621709e63a0d5c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52a9d60261490ef93bbc707801a000014f7983708a98a3b662621709e63a0d5c", kill_on_drop: false }`
[INFO] [stdout] 52a9d60261490ef93bbc707801a000014f7983708a98a3b662621709e63a0d5c