[INFO] fetching crate xbgdump 0.1.7...
[INFO] checking xbgdump-0.1.7 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate xbgdump 0.1.7 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate xbgdump 0.1.7 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 xbgdump 0.1.7
[INFO] finished tweaking crates.io crate xbgdump 0.1.7
[INFO] tweaked toml for crates.io crate xbgdump 0.1.7 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate xbgdump 0.1.7 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 x11rb v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 02aadc5072952fe52ec7ea46440ac47199406d1c280661beef21b13db6558961
[INFO] running `Command { std: "docker" "start" "-a" "02aadc5072952fe52ec7ea46440ac47199406d1c280661beef21b13db6558961", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02aadc5072952fe52ec7ea46440ac47199406d1c280661beef21b13db6558961", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02aadc5072952fe52ec7ea46440ac47199406d1c280661beef21b13db6558961", kill_on_drop: false }`
[INFO] [stdout] 02aadc5072952fe52ec7ea46440ac47199406d1c280661beef21b13db6558961
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 4f75ae995e4127a78f2ad6163b7bec5b1921913b6c84364e90a85b29e0adc597
[INFO] running `Command { std: "docker" "start" "-a" "4f75ae995e4127a78f2ad6163b7bec5b1921913b6c84364e90a85b29e0adc597", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking bytemuck v1.9.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking gethostname v0.2.3
[INFO] [stderr]     Checking nix v0.20.2
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking x11rb v0.8.1
[INFO] [stderr]     Checking xbgdump v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.31s
[INFO] running `Command { std: "docker" "inspect" "4f75ae995e4127a78f2ad6163b7bec5b1921913b6c84364e90a85b29e0adc597", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f75ae995e4127a78f2ad6163b7bec5b1921913b6c84364e90a85b29e0adc597", kill_on_drop: false }`
[INFO] [stdout] 4f75ae995e4127a78f2ad6163b7bec5b1921913b6c84364e90a85b29e0adc597
[INFO] checking xbgdump-0.1.7 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate xbgdump 0.1.7 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate xbgdump 0.1.7 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 xbgdump 0.1.7
[INFO] finished tweaking crates.io crate xbgdump 0.1.7
[INFO] tweaked toml for crates.io crate xbgdump 0.1.7 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate xbgdump 0.1.7 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6c43f9df165555565b3c4e5ca2630845bfd22cf6be5d3665de217b0c558e9bb4
[INFO] running `Command { std: "docker" "start" "-a" "6c43f9df165555565b3c4e5ca2630845bfd22cf6be5d3665de217b0c558e9bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c43f9df165555565b3c4e5ca2630845bfd22cf6be5d3665de217b0c558e9bb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c43f9df165555565b3c4e5ca2630845bfd22cf6be5d3665de217b0c558e9bb4", kill_on_drop: false }`
[INFO] [stdout] 6c43f9df165555565b3c4e5ca2630845bfd22cf6be5d3665de217b0c558e9bb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 1db53ca6360bd236332cb838524c3351eef1d383c29908178f6d91dc45c2ec9d
[INFO] running `Command { std: "docker" "start" "-a" "1db53ca6360bd236332cb838524c3351eef1d383c29908178f6d91dc45c2ec9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking bytemuck v1.9.1
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking nix v0.20.2
[INFO] [stderr]     Checking gethostname v0.2.3
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking x11rb v0.8.1
[INFO] [stderr]     Checking xbgdump v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.08s
[INFO] running `Command { std: "docker" "inspect" "1db53ca6360bd236332cb838524c3351eef1d383c29908178f6d91dc45c2ec9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1db53ca6360bd236332cb838524c3351eef1d383c29908178f6d91dc45c2ec9d", kill_on_drop: false }`
[INFO] [stdout] 1db53ca6360bd236332cb838524c3351eef1d383c29908178f6d91dc45c2ec9d