[INFO] fetching crate syscall-rs 0.0.3...
[INFO] checking syscall-rs-0.0.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate syscall-rs 0.0.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate syscall-rs 0.0.3 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 syscall-rs 0.0.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate syscall-rs 0.0.3
[INFO] tweaked toml for crates.io crate syscall-rs 0.0.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate syscall-rs 0.0.3 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]  Downloading crates ...
[INFO] [stderr]   Downloaded anyhow v1.0.53
[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] ffff72e8b48e3735de508f00d9ebb1fab38d1ddea187b6f9ff3081e6740a6d16
[INFO] running `Command { std: "docker" "start" "-a" "ffff72e8b48e3735de508f00d9ebb1fab38d1ddea187b6f9ff3081e6740a6d16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffff72e8b48e3735de508f00d9ebb1fab38d1ddea187b6f9ff3081e6740a6d16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffff72e8b48e3735de508f00d9ebb1fab38d1ddea187b6f9ff3081e6740a6d16", kill_on_drop: false }`
[INFO] [stdout] ffff72e8b48e3735de508f00d9ebb1fab38d1ddea187b6f9ff3081e6740a6d16
[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] 2fe2f12adb41cf23473cad8b7eaa729a9325c6ea7ffd798380594351694c45d7
[INFO] running `Command { std: "docker" "start" "-a" "2fe2f12adb41cf23473cad8b7eaa729a9325c6ea7ffd798380594351694c45d7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]    Compiling syscall-rs v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking mio v0.8.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.19s
[INFO] running `Command { std: "docker" "inspect" "2fe2f12adb41cf23473cad8b7eaa729a9325c6ea7ffd798380594351694c45d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fe2f12adb41cf23473cad8b7eaa729a9325c6ea7ffd798380594351694c45d7", kill_on_drop: false }`
[INFO] [stdout] 2fe2f12adb41cf23473cad8b7eaa729a9325c6ea7ffd798380594351694c45d7
[INFO] checking syscall-rs-0.0.3 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate syscall-rs 0.0.3 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate syscall-rs 0.0.3 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 syscall-rs 0.0.3
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate syscall-rs 0.0.3
[INFO] tweaked toml for crates.io crate syscall-rs 0.0.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate syscall-rs 0.0.3 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] a59ca112bf891fc5c91f3e598692f98d9d964a14136d7890e5ae49898f892e69
[INFO] running `Command { std: "docker" "start" "-a" "a59ca112bf891fc5c91f3e598692f98d9d964a14136d7890e5ae49898f892e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a59ca112bf891fc5c91f3e598692f98d9d964a14136d7890e5ae49898f892e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a59ca112bf891fc5c91f3e598692f98d9d964a14136d7890e5ae49898f892e69", kill_on_drop: false }`
[INFO] [stdout] a59ca112bf891fc5c91f3e598692f98d9d964a14136d7890e5ae49898f892e69
[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] fb3ba9447a70f89b95770ecd42374224088a596904982ed5c04aaccd27154d88
[INFO] running `Command { std: "docker" "start" "-a" "fb3ba9447a70f89b95770ecd42374224088a596904982ed5c04aaccd27154d88", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling syscall-rs v0.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking mio v0.8.0
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.43s
[INFO] running `Command { std: "docker" "inspect" "fb3ba9447a70f89b95770ecd42374224088a596904982ed5c04aaccd27154d88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb3ba9447a70f89b95770ecd42374224088a596904982ed5c04aaccd27154d88", kill_on_drop: false }`
[INFO] [stdout] fb3ba9447a70f89b95770ecd42374224088a596904982ed5c04aaccd27154d88