[INFO] fetching crate zula 2.0.3...
[INFO] checking zula-2.0.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate zula 2.0.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate zula 2.0.3 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zula 2.0.3
[INFO] finished tweaking crates.io crate zula 2.0.3
[INFO] tweaked toml for crates.io crate zula 2.0.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate zula 2.0.3 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libloading v0.8.0
[INFO] [stderr]   Downloaded zula-core v3.0.2
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9456f92e0e402f5e90ae385bec469374f16bc6c9427fe74314ad5fa528612f89
[INFO] running `Command { std: "docker" "start" "-a" "9456f92e0e402f5e90ae385bec469374f16bc6c9427fe74314ad5fa528612f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9456f92e0e402f5e90ae385bec469374f16bc6c9427fe74314ad5fa528612f89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9456f92e0e402f5e90ae385bec469374f16bc6c9427fe74314ad5fa528612f89", kill_on_drop: false }`
[INFO] [stdout] 9456f92e0e402f5e90ae385bec469374f16bc6c9427fe74314ad5fa528612f89
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe478bd10d958d9592e8e571d7fb72edfa4846080a7b776bca63e0e651a35122
[INFO] running `Command { std: "docker" "start" "-a" "fe478bd10d958d9592e8e571d7fb72edfa4846080a7b776bca63e0e651a35122", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking libloading v0.8.0
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking termion v2.0.1
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking zula-core v3.0.2
[INFO] [stderr]     Checking zula v2.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `Command { std: "docker" "inspect" "fe478bd10d958d9592e8e571d7fb72edfa4846080a7b776bca63e0e651a35122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe478bd10d958d9592e8e571d7fb72edfa4846080a7b776bca63e0e651a35122", kill_on_drop: false }`
[INFO] [stdout] fe478bd10d958d9592e8e571d7fb72edfa4846080a7b776bca63e0e651a35122
[INFO] checking zula-2.0.3 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate zula 2.0.3 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate zula 2.0.3 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zula 2.0.3
[INFO] finished tweaking crates.io crate zula 2.0.3
[INFO] tweaked toml for crates.io crate zula 2.0.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate zula 2.0.3 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7dbad6a0ed23002d1e41184f9a3a0d6690ccd50421ef661156b89663155a57d8
[INFO] running `Command { std: "docker" "start" "-a" "7dbad6a0ed23002d1e41184f9a3a0d6690ccd50421ef661156b89663155a57d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7dbad6a0ed23002d1e41184f9a3a0d6690ccd50421ef661156b89663155a57d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dbad6a0ed23002d1e41184f9a3a0d6690ccd50421ef661156b89663155a57d8", kill_on_drop: false }`
[INFO] [stdout] 7dbad6a0ed23002d1e41184f9a3a0d6690ccd50421ef661156b89663155a57d8
[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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ac3b6500729de9244240799ee087939ba410af917271eadb89aad37dfdf726e
[INFO] running `Command { std: "docker" "start" "-a" "2ac3b6500729de9244240799ee087939ba410af917271eadb89aad37dfdf726e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking libloading v0.8.0
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking termion v2.0.1
[INFO] [stderr]     Checking dirs v5.0.1
[INFO] [stderr]     Checking zula-core v3.0.2
[INFO] [stderr]     Checking zula v2.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `Command { std: "docker" "inspect" "2ac3b6500729de9244240799ee087939ba410af917271eadb89aad37dfdf726e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ac3b6500729de9244240799ee087939ba410af917271eadb89aad37dfdf726e", kill_on_drop: false }`
[INFO] [stdout] 2ac3b6500729de9244240799ee087939ba410af917271eadb89aad37dfdf726e