[INFO] cloning repository https://github.com/bnclabs/diskio
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bnclabs/diskio" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbnclabs%2Fdiskio", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbnclabs%2Fdiskio'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc38c678626f427444f4f1917b409a09b2fa2725
[INFO] checking bnclabs/diskio against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbnclabs%2Fdiskio" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bnclabs/diskio on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bnclabs/diskio
[INFO] finished tweaking git repo https://github.com/bnclabs/diskio
[INFO] tweaked toml for git repo https://github.com/bnclabs/diskio written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bnclabs/diskio 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unicode-width v0.1.5
[INFO] [stderr]   Downloaded syn v0.15.38
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[INFO] [stderr]   Downloaded png v0.14.1
[INFO] [stderr]   Downloaded rayon-core v1.5.0
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[INFO] [stderr]   Downloaded expat-sys v2.1.6
[INFO] [stderr]   Downloaded tiff v0.2.2
[INFO] [stderr]   Downloaded backtrace-sys v0.1.30
[INFO] [stderr]   Downloaded libc v0.2.59
[INFO] [stderr]   Downloaded plotters v0.2.2
[INFO] [stderr]   Downloaded image v0.21.2
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.47
[INFO] [stderr]   Downloaded bumpalo v2.5.0
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[INFO] [stderr]   Downloaded servo-fontconfig-sys v4.0.7
[INFO] [stderr]   Downloaded nom v4.2.3
[INFO] [stderr]   Downloaded web-sys v0.3.24
[INFO] [stderr]   Downloaded regex-syntax v0.6.8
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[INFO] [stderr]   Downloaded svg v0.5.12
[INFO] [stderr]   Downloaded js-sys v0.3.24
[INFO] [stderr]   Downloaded num-rational v0.2.2
[INFO] [stderr]   Downloaded rusttype v0.7.7
[INFO] [stderr]   Downloaded cc v1.0.37
[INFO] [stderr]   Downloaded servo-fontconfig v0.4.0
[INFO] [stderr]   Downloaded num-iter v0.1.39
[INFO] [stderr]   Downloaded backtrace v0.3.32
[INFO] [stderr]   Downloaded cmake v0.1.40
[INFO] [stderr]   Downloaded crossbeam-deque v0.6.3
[INFO] [stderr]   Downloaded num-derive v0.2.5
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[INFO] [stderr]   Downloaded weedle v0.9.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf8068452d636135aba92b14c10e968bc959fffe04c54a4cd47da6eabe03f7bd
[INFO] running `Command { std: "docker" "start" "-a" "cf8068452d636135aba92b14c10e968bc959fffe04c54a4cd47da6eabe03f7bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf8068452d636135aba92b14c10e968bc959fffe04c54a4cd47da6eabe03f7bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf8068452d636135aba92b14c10e968bc959fffe04c54a4cd47da6eabe03f7bd", kill_on_drop: false }`
[INFO] [stdout] cf8068452d636135aba92b14c10e968bc959fffe04c54a4cd47da6eabe03f7bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d32b961f48d9d4bcc666c2a163d4f659697364ba4c0af6c597e2970106d019cf
[INFO] running `Command { std: "docker" "start" "-a" "d32b961f48d9d4bcc666c2a163d4f659697364ba4c0af6c597e2970106d019cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling syn v0.15.38
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.7
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking gif v0.10.2
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking stb_truetype v0.2.6
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking rusttype v0.7.7
[INFO] [stderr]     Checking font-loader v0.8.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking svg v0.5.12
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.2
[INFO] [stderr]     Checking plotters v0.2.2
[INFO] [stderr]     Checking diskio v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |         DiskioError(err.description().to_string())
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |         DiskioError(err.description().to_string())
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 |         DiskioError(err.description().to_string())
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:19:25
[INFO] [stdout]    |
[INFO] [stdout] 19 |         DiskioError(err.description().to_string())
[INFO] [stdout]    |                         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.18s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: svg v0.5.12
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "d32b961f48d9d4bcc666c2a163d4f659697364ba4c0af6c597e2970106d019cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d32b961f48d9d4bcc666c2a163d4f659697364ba4c0af6c597e2970106d019cf", kill_on_drop: false }`
[INFO] [stdout] d32b961f48d9d4bcc666c2a163d4f659697364ba4c0af6c597e2970106d019cf
[INFO] checking bnclabs/diskio against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbnclabs%2Fdiskio" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bnclabs/diskio on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bnclabs/diskio
[INFO] finished tweaking git repo https://github.com/bnclabs/diskio
[INFO] tweaked toml for git repo https://github.com/bnclabs/diskio written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bnclabs/diskio 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5db205d8d5778ca251a5d0757bf9513117587662532815a5008ebff88b119eef
[INFO] running `Command { std: "docker" "start" "-a" "5db205d8d5778ca251a5d0757bf9513117587662532815a5008ebff88b119eef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5db205d8d5778ca251a5d0757bf9513117587662532815a5008ebff88b119eef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5db205d8d5778ca251a5d0757bf9513117587662532815a5008ebff88b119eef", kill_on_drop: false }`
[INFO] [stdout] 5db205d8d5778ca251a5d0757bf9513117587662532815a5008ebff88b119eef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7afc12cc8919d134a98b107d4ec58e8cedd9bf750fe72f93c3eca04397b65340
[INFO] running `Command { std: "docker" "start" "-a" "7afc12cc8919d134a98b107d4ec58e8cedd9bf750fe72f93c3eca04397b65340", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling pkg-config v0.3.14
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking rand_core v0.4.0
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling syn v0.15.38
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.7
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking png v0.14.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking gif v0.10.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking stb_truetype v0.2.6
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]     Checking font-loader v0.8.0
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking rusttype v0.7.7
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking svg v0.5.12
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/regex-1.1.9/src/exec.rs:795:13
[INFO] [stdout]     |
[INFO] [stdout] 795 | /             match dfa::Fsm::reverse(
[INFO] [stdout] 796 | |                 &self.ro.dfa_reverse,
[INFO] [stdout] 797 | |                 self.cache,
[INFO] [stdout] 798 | |                 false,
[INFO] [stdout] ...   |
[INFO] [stdout] 809 | |                 Quit => return Some(Quit),
[INFO] [stdout] 810 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `regex` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7afc12cc8919d134a98b107d4ec58e8cedd9bf750fe72f93c3eca04397b65340", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7afc12cc8919d134a98b107d4ec58e8cedd9bf750fe72f93c3eca04397b65340", kill_on_drop: false }`
[INFO] [stdout] 7afc12cc8919d134a98b107d4ec58e8cedd9bf750fe72f93c3eca04397b65340