[INFO] fetching crate fc-tools-snowflakes 0.1.1...
[INFO] checking fc-tools-snowflakes-0.1.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate fc-tools-snowflakes 0.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate fc-tools-snowflakes 0.1.1 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 fc-tools-snowflakes 0.1.1
[INFO] finished tweaking crates.io crate fc-tools-snowflakes 0.1.1
[INFO] tweaked toml for crates.io crate fc-tools-snowflakes 0.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate fc-tools-snowflakes 0.1.1 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded int-enum v0.4.0
[INFO] [stderr]   Downloaded int-enum-impl v0.4.0
[INFO] [stderr]   Downloaded serde v1.0.132
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b3444f9e5ec8aeede527c6bf5aced08c10dc1c14fbeea1879f0628efe0cc084f
[INFO] running `Command { std: "docker" "start" "-a" "b3444f9e5ec8aeede527c6bf5aced08c10dc1c14fbeea1879f0628efe0cc084f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3444f9e5ec8aeede527c6bf5aced08c10dc1c14fbeea1879f0628efe0cc084f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3444f9e5ec8aeede527c6bf5aced08c10dc1c14fbeea1879f0628efe0cc084f", kill_on_drop: false }`
[INFO] [stdout] b3444f9e5ec8aeede527c6bf5aced08c10dc1c14fbeea1879f0628efe0cc084f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] e711bb90b31fb9ff0e51d957a7662ff6346dca8e0cb10cd3f66b73f137709cc9
[INFO] running `Command { std: "docker" "start" "-a" "e711bb90b31fb9ff0e51d957a7662ff6346dca8e0cb10cd3f66b73f137709cc9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling int-enum-impl v0.4.0
[INFO] [stderr]     Checking int-enum v0.4.0
[INFO] [stderr]     Checking fc-tools-snowflakes v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.58s
[INFO] running `Command { std: "docker" "inspect" "e711bb90b31fb9ff0e51d957a7662ff6346dca8e0cb10cd3f66b73f137709cc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e711bb90b31fb9ff0e51d957a7662ff6346dca8e0cb10cd3f66b73f137709cc9", kill_on_drop: false }`
[INFO] [stdout] e711bb90b31fb9ff0e51d957a7662ff6346dca8e0cb10cd3f66b73f137709cc9
[INFO] checking fc-tools-snowflakes-0.1.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate fc-tools-snowflakes 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate fc-tools-snowflakes 0.1.1 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 fc-tools-snowflakes 0.1.1
[INFO] finished tweaking crates.io crate fc-tools-snowflakes 0.1.1
[INFO] tweaked toml for crates.io crate fc-tools-snowflakes 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate fc-tools-snowflakes 0.1.1 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] [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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 15b81521c8023abc87bbe24ce8cf135b416a592f649ac9558a85dabcfaa51eb8
[INFO] running `Command { std: "docker" "start" "-a" "15b81521c8023abc87bbe24ce8cf135b416a592f649ac9558a85dabcfaa51eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15b81521c8023abc87bbe24ce8cf135b416a592f649ac9558a85dabcfaa51eb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15b81521c8023abc87bbe24ce8cf135b416a592f649ac9558a85dabcfaa51eb8", kill_on_drop: false }`
[INFO] [stdout] 15b81521c8023abc87bbe24ce8cf135b416a592f649ac9558a85dabcfaa51eb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5027f2b2bb005b15ee396358e1bbc79add42bdec012de730ba3aa945d108b02f
[INFO] running `Command { std: "docker" "start" "-a" "5027f2b2bb005b15ee396358e1bbc79add42bdec012de730ba3aa945d108b02f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling int-enum-impl v0.4.0
[INFO] [stderr]     Checking int-enum v0.4.0
[INFO] [stderr]     Checking fc-tools-snowflakes v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.64s
[INFO] running `Command { std: "docker" "inspect" "5027f2b2bb005b15ee396358e1bbc79add42bdec012de730ba3aa945d108b02f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5027f2b2bb005b15ee396358e1bbc79add42bdec012de730ba3aa945d108b02f", kill_on_drop: false }`
[INFO] [stdout] 5027f2b2bb005b15ee396358e1bbc79add42bdec012de730ba3aa945d108b02f