[INFO] fetching crate file_systems 0.2.0...
[INFO] checking file_systems-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate file_systems 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate file_systems 0.2.0 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 file_systems 0.2.0
[INFO] finished tweaking crates.io crate file_systems 0.2.0
[INFO] tweaked toml for crates.io crate file_systems 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate file_systems 0.2.0 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 spin v0.9.2
[INFO] [stderr]   Downloaded bit_field v0.10.1
[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] dbdf68ccff39c2875a90d9bf48b8d8889303fb9c37d5bf41684b14767fefcc6c
[INFO] running `Command { std: "docker" "start" "-a" "dbdf68ccff39c2875a90d9bf48b8d8889303fb9c37d5bf41684b14767fefcc6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dbdf68ccff39c2875a90d9bf48b8d8889303fb9c37d5bf41684b14767fefcc6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbdf68ccff39c2875a90d9bf48b8d8889303fb9c37d5bf41684b14767fefcc6c", kill_on_drop: false }`
[INFO] [stdout] dbdf68ccff39c2875a90d9bf48b8d8889303fb9c37d5bf41684b14767fefcc6c
[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] 0f9b9e504e976b93cc543d2ccf0969b357307f04a5ba7c19a79f51e3bf815d89
[INFO] running `Command { std: "docker" "start" "-a" "0f9b9e504e976b93cc543d2ccf0969b357307f04a5ba7c19a79f51e3bf815d89", kill_on_drop: false }`
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking file_systems v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "0f9b9e504e976b93cc543d2ccf0969b357307f04a5ba7c19a79f51e3bf815d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f9b9e504e976b93cc543d2ccf0969b357307f04a5ba7c19a79f51e3bf815d89", kill_on_drop: false }`
[INFO] [stdout] 0f9b9e504e976b93cc543d2ccf0969b357307f04a5ba7c19a79f51e3bf815d89
[INFO] checking file_systems-0.2.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate file_systems 0.2.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate file_systems 0.2.0 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 file_systems 0.2.0
[INFO] finished tweaking crates.io crate file_systems 0.2.0
[INFO] tweaked toml for crates.io crate file_systems 0.2.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate file_systems 0.2.0 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-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] 017a8a60031584f4b1c12ec2e1b554c40d455500adfeb5a5d8d7f0b918aaf8a0
[INFO] running `Command { std: "docker" "start" "-a" "017a8a60031584f4b1c12ec2e1b554c40d455500adfeb5a5d8d7f0b918aaf8a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "017a8a60031584f4b1c12ec2e1b554c40d455500adfeb5a5d8d7f0b918aaf8a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "017a8a60031584f4b1c12ec2e1b554c40d455500adfeb5a5d8d7f0b918aaf8a0", kill_on_drop: false }`
[INFO] [stdout] 017a8a60031584f4b1c12ec2e1b554c40d455500adfeb5a5d8d7f0b918aaf8a0
[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] bcba9681dbc3620456a750b90157363302ec3987f1f34722a9d19ad19de8e3a2
[INFO] running `Command { std: "docker" "start" "-a" "bcba9681dbc3620456a750b90157363302ec3987f1f34722a9d19ad19de8e3a2", kill_on_drop: false }`
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking file_systems v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "bcba9681dbc3620456a750b90157363302ec3987f1f34722a9d19ad19de8e3a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bcba9681dbc3620456a750b90157363302ec3987f1f34722a9d19ad19de8e3a2", kill_on_drop: false }`
[INFO] [stdout] bcba9681dbc3620456a750b90157363302ec3987f1f34722a9d19ad19de8e3a2