[INFO] fetching crate uppercut 0.4.0...
[INFO] checking uppercut-0.4.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate uppercut 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate uppercut 0.4.0 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 uppercut 0.4.0
[INFO] finished tweaking crates.io crate uppercut 0.4.0
[INFO] tweaked toml for crates.io crate uppercut 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate uppercut 0.4.0 already has a lockfile, it will not be regenerated
[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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded get_if_addrs v0.5.3
[INFO] [stderr]   Downloaded core_affinity v0.5.10
[INFO] [stderr]   Downloaded get_if_addrs-sys v0.1.1
[INFO] [stderr]   Downloaded c_linked_list v1.1.1
[INFO] [stderr]   Downloaded parsed v0.3.0
[INFO] [stderr]   Downloaded env_logger v0.8.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 912edda5ddd6aae65b83d6f4c1a0a6d592dd6cd4fd94bee3e5ce9337a53a2d86
[INFO] running `Command { std: "docker" "start" "-a" "912edda5ddd6aae65b83d6f4c1a0a6d592dd6cd4fd94bee3e5ce9337a53a2d86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "912edda5ddd6aae65b83d6f4c1a0a6d592dd6cd4fd94bee3e5ce9337a53a2d86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "912edda5ddd6aae65b83d6f4c1a0a6d592dd6cd4fd94bee3e5ce9337a53a2d86", kill_on_drop: false }`
[INFO] [stdout] 912edda5ddd6aae65b83d6f4c1a0a6d592dd6cd4fd94bee3e5ce9337a53a2d86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] c4dc6a8f813d651e9c5b52742398c26091ac9bc20d8d5a3c60cf1a7a593b0b7c
[INFO] running `Command { std: "docker" "start" "-a" "c4dc6a8f813d651e9c5b52742398c26091ac9bc20d8d5a3c60cf1a7a593b0b7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking parsed v0.3.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking core_affinity v0.5.10
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking uppercut v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/gossip.rs:52:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     New(String),
[INFO] [stdout]    |     --- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 52 |     New(()),
[INFO] [stdout]    |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> examples/gossip.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 53 |     Out(String),
[INFO] [stdout]    |     --- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 53 |     Out(()),
[INFO] [stdout]    |         ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.53s
[INFO] running `Command { std: "docker" "inspect" "c4dc6a8f813d651e9c5b52742398c26091ac9bc20d8d5a3c60cf1a7a593b0b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4dc6a8f813d651e9c5b52742398c26091ac9bc20d8d5a3c60cf1a7a593b0b7c", kill_on_drop: false }`
[INFO] [stdout] c4dc6a8f813d651e9c5b52742398c26091ac9bc20d8d5a3c60cf1a7a593b0b7c