[INFO] fetching crate pico-enumeration 0.3.1...
[INFO] checking pico-enumeration-0.3.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate pico-enumeration 0.3.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate pico-enumeration 0.3.1 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 pico-enumeration 0.3.1
[INFO] finished tweaking crates.io crate pico-enumeration 0.3.1
[INFO] tweaked toml for crates.io crate pico-enumeration 0.3.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 59 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding core-foundation v0.6.4 (latest: v0.9.4)
[INFO] [stderr]       Adding core-foundation-sys v0.6.2 (latest: v0.8.6)
[INFO] [stderr]       Adding enum-iterator v0.6.0 (latest: v2.0.0)
[INFO] [stderr]       Adding enum-iterator-derive v0.6.0 (latest: v1.3.0)
[INFO] [stderr]       Adding io-kit-sys v0.1.0 (latest: v0.4.1)
[INFO] [stderr]       Adding libloading v0.7.4 (latest: v0.8.3)
[INFO] [stderr]       Adding mach v0.2.3 (latest: v0.3.2)
[INFO] [stderr]       Adding num-derive v0.3.3 (latest: v0.4.2)
[INFO] [stderr]       Adding parking_lot v0.11.2 (latest: v0.12.1)
[INFO] [stderr]       Adding parking_lot_core v0.8.6 (latest: v0.9.9)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding udev v0.5.0 (latest: v0.8.0)
[INFO] [stderr]       Adding usb_enumeration v0.1.2 (latest: v0.2.0)
[INFO] [stderr]       Adding version-compare v0.0.11 (latest: v0.2.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded usb_enumeration v0.1.2
[INFO] [stderr]   Downloaded enum-iterator-derive v0.6.0
[INFO] [stderr]   Downloaded enum-iterator v0.6.0
[INFO] [stderr]   Downloaded pico-device v0.3.1
[INFO] [stderr]   Downloaded pico-sys-dynamic v0.3.1
[INFO] [stderr]   Downloaded c_vec v2.0.0
[INFO] [stderr]   Downloaded pico-common v0.3.1
[INFO] [stderr]   Downloaded version-compare v0.0.11
[INFO] [stderr]   Downloaded udev v0.5.0
[INFO] [stderr]   Downloaded pico-driver v0.3.1
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 324dfb5b59ec4a26e3aab8495da3ab6fa815b8db56ea78fcd78dc5e98f5df066
[INFO] running `Command { std: "docker" "start" "-a" "324dfb5b59ec4a26e3aab8495da3ab6fa815b8db56ea78fcd78dc5e98f5df066", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "324dfb5b59ec4a26e3aab8495da3ab6fa815b8db56ea78fcd78dc5e98f5df066", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "324dfb5b59ec4a26e3aab8495da3ab6fa815b8db56ea78fcd78dc5e98f5df066", kill_on_drop: false }`
[INFO] [stdout] 324dfb5b59ec4a26e3aab8495da3ab6fa815b8db56ea78fcd78dc5e98f5df066
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6ed8bc7dee8614406c6ba744bda64cd9cf0742d276c50021988ea3924ac55b5
[INFO] running `Command { std: "docker" "start" "-a" "e6ed8bc7dee8614406c6ba744bda64cd9cf0742d276c50021988ea3924ac55b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking c_vec v2.0.0
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]     Checking version-compare v0.0.11
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]     Checking crossbeam-queue v0.3.11
[INFO] [stderr]     Checking pico-sys-dynamic v0.3.1
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking udev v0.5.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking usb_enumeration v0.1.2
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]     Checking pico-common v0.3.1
[INFO] [stderr]     Checking pico-driver v0.3.1
[INFO] [stderr]     Checking pico-device v0.3.1
[INFO] [stderr]     Checking pico-enumeration v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.11s
[INFO] running `Command { std: "docker" "inspect" "e6ed8bc7dee8614406c6ba744bda64cd9cf0742d276c50021988ea3924ac55b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6ed8bc7dee8614406c6ba744bda64cd9cf0742d276c50021988ea3924ac55b5", kill_on_drop: false }`
[INFO] [stdout] e6ed8bc7dee8614406c6ba744bda64cd9cf0742d276c50021988ea3924ac55b5
[INFO] checking pico-enumeration-0.3.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate pico-enumeration 0.3.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate pico-enumeration 0.3.1 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 pico-enumeration 0.3.1
[INFO] finished tweaking crates.io crate pico-enumeration 0.3.1
[INFO] tweaked toml for crates.io crate pico-enumeration 0.3.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 59 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding core-foundation v0.6.4 (latest: v0.9.4)
[INFO] [stderr]       Adding core-foundation-sys v0.6.2 (latest: v0.8.6)
[INFO] [stderr]       Adding enum-iterator v0.6.0 (latest: v2.0.0)
[INFO] [stderr]       Adding enum-iterator-derive v0.6.0 (latest: v1.3.0)
[INFO] [stderr]       Adding io-kit-sys v0.1.0 (latest: v0.4.1)
[INFO] [stderr]       Adding libloading v0.7.4 (latest: v0.8.3)
[INFO] [stderr]       Adding mach v0.2.3 (latest: v0.3.2)
[INFO] [stderr]       Adding num-derive v0.3.3 (latest: v0.4.2)
[INFO] [stderr]       Adding parking_lot v0.11.2 (latest: v0.12.1)
[INFO] [stderr]       Adding parking_lot_core v0.8.6 (latest: v0.9.9)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding udev v0.5.0 (latest: v0.8.0)
[INFO] [stderr]       Adding usb_enumeration v0.1.2 (latest: v0.2.0)
[INFO] [stderr]       Adding version-compare v0.0.11 (latest: v0.2.0)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] b711baf206301e85f06bf34b777883dc4f598cf4ce750de246f674f3e772c3bf
[INFO] running `Command { std: "docker" "start" "-a" "b711baf206301e85f06bf34b777883dc4f598cf4ce750de246f674f3e772c3bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b711baf206301e85f06bf34b777883dc4f598cf4ce750de246f674f3e772c3bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b711baf206301e85f06bf34b777883dc4f598cf4ce750de246f674f3e772c3bf", kill_on_drop: false }`
[INFO] [stdout] b711baf206301e85f06bf34b777883dc4f598cf4ce750de246f674f3e772c3bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] fdbfb616e7b93945b28bd30f806c7e4267103ee23dd001d922838eeec47ee13f
[INFO] running `Command { std: "docker" "start" "-a" "fdbfb616e7b93945b28bd30f806c7e4267103ee23dd001d922838eeec47ee13f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]     Checking libloading v0.7.4
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking c_vec v2.0.0
[INFO] [stderr]     Checking version-compare v0.0.11
[INFO] [stderr]     Checking crossbeam-channel v0.5.12
[INFO] [stderr]     Checking crossbeam-queue v0.3.11
[INFO] [stderr]     Checking pico-sys-dynamic v0.3.1
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking udev v0.5.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking usb_enumeration v0.1.2
[INFO] [stderr]    Compiling enum-iterator-derive v0.6.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking enum-iterator v0.6.0
[INFO] [stderr]     Checking pico-common v0.3.1
[INFO] [stderr]     Checking pico-driver v0.3.1
[INFO] [stderr]     Checking pico-device v0.3.1
[INFO] [stderr]     Checking pico-enumeration v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.40s
[INFO] running `Command { std: "docker" "inspect" "fdbfb616e7b93945b28bd30f806c7e4267103ee23dd001d922838eeec47ee13f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdbfb616e7b93945b28bd30f806c7e4267103ee23dd001d922838eeec47ee13f", kill_on_drop: false }`
[INFO] [stdout] fdbfb616e7b93945b28bd30f806c7e4267103ee23dd001d922838eeec47ee13f