[INFO] fetching crate usbenum 0.1.0...
[INFO] checking usbenum-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate usbenum 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate usbenum 0.1.0 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 usbenum 0.1.0
[INFO] finished tweaking crates.io crate usbenum 0.1.0
[INFO] tweaked toml for crates.io crate usbenum 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate usbenum 0.1.0 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.75
[INFO] [stderr]   Downloaded io-kit-sys v0.1.0
[INFO] [stderr]   Downloaded serde_derive v1.0.128
[INFO] [stderr]   Downloaded serde v1.0.128
[INFO] [stderr]   Downloaded libc v0.2.100
[INFO] [stderr]   Downloaded udev v0.6.2
[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] 3905c25bc54b28079f013b5998e5f59a4e04dcc3a03b2cfd3f6468af058df0ff
[INFO] running `Command { std: "docker" "start" "-a" "3905c25bc54b28079f013b5998e5f59a4e04dcc3a03b2cfd3f6468af058df0ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3905c25bc54b28079f013b5998e5f59a4e04dcc3a03b2cfd3f6468af058df0ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3905c25bc54b28079f013b5998e5f59a4e04dcc3a03b2cfd3f6468af058df0ff", kill_on_drop: false }`
[INFO] [stdout] 3905c25bc54b28079f013b5998e5f59a4e04dcc3a03b2cfd3f6468af058df0ff
[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] a8100ad8d4e0d1622485b2f6e2c184434bdc31e35282e67b3aa20cefef8219bd
[INFO] running `Command { std: "docker" "start" "-a" "a8100ad8d4e0d1622485b2f6e2c184434bdc31e35282e67b3aa20cefef8219bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking udev v0.6.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking usbenum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 11.84s
[INFO] running `Command { std: "docker" "inspect" "a8100ad8d4e0d1622485b2f6e2c184434bdc31e35282e67b3aa20cefef8219bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8100ad8d4e0d1622485b2f6e2c184434bdc31e35282e67b3aa20cefef8219bd", kill_on_drop: false }`
[INFO] [stdout] a8100ad8d4e0d1622485b2f6e2c184434bdc31e35282e67b3aa20cefef8219bd
[INFO] checking usbenum-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate usbenum 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate usbenum 0.1.0 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 usbenum 0.1.0
[INFO] finished tweaking crates.io crate usbenum 0.1.0
[INFO] tweaked toml for crates.io crate usbenum 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate usbenum 0.1.0 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" "+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] 38bcf7a46386df2d29f5947d26a6ae3c9c67070f50ed06b0774f67436ec1c1a8
[INFO] running `Command { std: "docker" "start" "-a" "38bcf7a46386df2d29f5947d26a6ae3c9c67070f50ed06b0774f67436ec1c1a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38bcf7a46386df2d29f5947d26a6ae3c9c67070f50ed06b0774f67436ec1c1a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38bcf7a46386df2d29f5947d26a6ae3c9c67070f50ed06b0774f67436ec1c1a8", kill_on_drop: false }`
[INFO] [stdout] 38bcf7a46386df2d29f5947d26a6ae3c9c67070f50ed06b0774f67436ec1c1a8
[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] 76977f6c5f189e67915064a0b5efdb4bf4e865a36e8c6d4a86f3941db1348aeb
[INFO] running `Command { std: "docker" "start" "-a" "76977f6c5f189e67915064a0b5efdb4bf4e865a36e8c6d4a86f3941db1348aeb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking udev v0.6.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking usbenum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 12.27s
[INFO] running `Command { std: "docker" "inspect" "76977f6c5f189e67915064a0b5efdb4bf4e865a36e8c6d4a86f3941db1348aeb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76977f6c5f189e67915064a0b5efdb4bf4e865a36e8c6d4a86f3941db1348aeb", kill_on_drop: false }`
[INFO] [stdout] 76977f6c5f189e67915064a0b5efdb4bf4e865a36e8c6d4a86f3941db1348aeb