[INFO] fetching crate tectonic_engine_bibtex 0.2.1...
[INFO] checking tectonic_engine_bibtex-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate tectonic_engine_bibtex 0.2.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate tectonic_engine_bibtex 0.2.1 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 tectonic_engine_bibtex 0.2.1
[INFO] finished tweaking crates.io crate tectonic_engine_bibtex 0.2.1
[INFO] tweaked toml for crates.io crate tectonic_engine_bibtex 0.2.1 written to /workspace/builds/worker-1-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]     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]      Locking 57 packages
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding jni-sys v0.3.0 (latest: v0.4.0)
[INFO] [stderr]       Adding windows-sys v0.45.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.42.2 (latest: v0.52.4)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded tectonic_bridge_core v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 3d9520924cb4f9e8980153663ebfd2acbaa20459adb1bdd3b058be60c3616e8c
[INFO] running `Command { std: "docker" "start" "-a" "3d9520924cb4f9e8980153663ebfd2acbaa20459adb1bdd3b058be60c3616e8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d9520924cb4f9e8980153663ebfd2acbaa20459adb1bdd3b058be60c3616e8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d9520924cb4f9e8980153663ebfd2acbaa20459adb1bdd3b058be60c3616e8c", kill_on_drop: false }`
[INFO] [stdout] 3d9520924cb4f9e8980153663ebfd2acbaa20459adb1bdd3b058be60c3616e8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 19db4c09fd046be6d98335d41c12f3f6d676b7c70a67674e957beec59fa1aded
[INFO] running `Command { std: "docker" "start" "-a" "19db4c09fd046be6d98335d41c12f3f6d676b7c70a67674e957beec59fa1aded", kill_on_drop: false }`
[INFO] [stderr]    Compiling libz-sys v1.1.16
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking tectonic_errors v0.2.1
[INFO] [stderr]    Compiling tectonic_bridge_core v0.4.1
[INFO] [stderr]     Checking xdg v2.5.2
[INFO] [stderr]    Compiling tectonic_engine_bibtex v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tectonic_status_base v0.2.1
[INFO] [stderr]     Checking app_dirs2 v2.5.5
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr] warning: tectonic_engine_bibtex@0.2.1: Compiler version doesn't include clang or GCC: "cc" "--version"
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking tectonic_io_base v0.4.3
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.30s
[INFO] running `Command { std: "docker" "inspect" "19db4c09fd046be6d98335d41c12f3f6d676b7c70a67674e957beec59fa1aded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19db4c09fd046be6d98335d41c12f3f6d676b7c70a67674e957beec59fa1aded", kill_on_drop: false }`
[INFO] [stdout] 19db4c09fd046be6d98335d41c12f3f6d676b7c70a67674e957beec59fa1aded
[INFO] checking tectonic_engine_bibtex-0.2.1 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate tectonic_engine_bibtex 0.2.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate tectonic_engine_bibtex 0.2.1 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 tectonic_engine_bibtex 0.2.1
[INFO] finished tweaking crates.io crate tectonic_engine_bibtex 0.2.1
[INFO] tweaked toml for crates.io crate tectonic_engine_bibtex 0.2.1 written to /workspace/builds/worker-1-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]     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]      Locking 57 packages
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding jni-sys v0.3.0 (latest: v0.4.0)
[INFO] [stderr]       Adding windows-sys v0.45.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.42.2 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.42.2 (latest: v0.52.4)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1a22134b41fdcab5a6a915f11b149d8adc2920b01bbff6e27185eb1aff3d72da
[INFO] running `Command { std: "docker" "start" "-a" "1a22134b41fdcab5a6a915f11b149d8adc2920b01bbff6e27185eb1aff3d72da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a22134b41fdcab5a6a915f11b149d8adc2920b01bbff6e27185eb1aff3d72da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a22134b41fdcab5a6a915f11b149d8adc2920b01bbff6e27185eb1aff3d72da", kill_on_drop: false }`
[INFO] [stdout] 1a22134b41fdcab5a6a915f11b149d8adc2920b01bbff6e27185eb1aff3d72da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] bc44e5adcfe1e37c74cde403da388bc1204413f7228a9296e54701ba69cd88b2
[INFO] running `Command { std: "docker" "start" "-a" "bc44e5adcfe1e37c74cde403da388bc1204413f7228a9296e54701ba69cd88b2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libz-sys v1.1.16
[INFO] [stderr]    Compiling tectonic_bridge_core v0.4.1
[INFO] [stderr]     Checking tectonic_errors v0.2.1
[INFO] [stderr]     Checking xdg v2.5.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]    Compiling tectonic_engine_bibtex v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tectonic_status_base v0.2.1
[INFO] [stderr]     Checking app_dirs2 v2.5.5
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking md-5 v0.10.6
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr] warning: tectonic_engine_bibtex@0.2.1: Compiler version doesn't include clang or GCC: "cc" "--version"
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking tectonic_io_base v0.4.3
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.54s
[INFO] running `Command { std: "docker" "inspect" "bc44e5adcfe1e37c74cde403da388bc1204413f7228a9296e54701ba69cd88b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc44e5adcfe1e37c74cde403da388bc1204413f7228a9296e54701ba69cd88b2", kill_on_drop: false }`
[INFO] [stdout] bc44e5adcfe1e37c74cde403da388bc1204413f7228a9296e54701ba69cd88b2