[INFO] cloning repository https://github.com/vi/fusenbd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vi/fusenbd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvi%2Ffusenbd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvi%2Ffusenbd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f9d7a1c2e3f85bfb43c06c456a775350d5876995
[INFO] checking vi/fusenbd against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvi%2Ffusenbd" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vi/fusenbd 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/vi/fusenbd
[INFO] finished tweaking git repo https://github.com/vi/fusenbd
[INFO] tweaked toml for git repo https://github.com/vi/fusenbd written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/vi/fusenbd 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 readwriteseekfs v0.1.0
[INFO] [stderr]   Downloaded nbd v0.2.1
[INFO] [stderr]   Downloaded syn v0.14.8
[INFO] [stderr]   Downloaded pkg-config v0.3.13
[INFO] [stderr]   Downloaded fuse v0.3.1
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72857f27af2cb434f79bd5cc158ea17eca2fc80379ceb1c7cec3ab82fdc493db
[INFO] running `Command { std: "docker" "start" "-a" "72857f27af2cb434f79bd5cc158ea17eca2fc80379ceb1c7cec3ab82fdc493db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72857f27af2cb434f79bd5cc158ea17eca2fc80379ceb1c7cec3ab82fdc493db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72857f27af2cb434f79bd5cc158ea17eca2fc80379ceb1c7cec3ab82fdc493db", kill_on_drop: false }`
[INFO] [stdout] 72857f27af2cb434f79bd5cc158ea17eca2fc80379ceb1c7cec3ab82fdc493db
[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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2fcb45b002581c285ad25d61a63f152db35a0c1da6ed5019dc40ec96e186e896
[INFO] running `Command { std: "docker" "start" "-a" "2fcb45b002581c285ad25d61a63f152db35a0c1da6ed5019dc40ec96e186e896", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.13
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]    Compiling pkg-config v0.3.13
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]     Checking log v0.4.4
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking nbd v0.2.1
[INFO] [stderr]    Compiling fuse v0.3.1
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]    Compiling quote v0.6.6
[INFO] [stderr]    Compiling syn v0.14.8
[INFO] [stderr]     Checking readwriteseekfs v0.1.0
[INFO] [stderr]    Compiling structopt-derive v0.2.10
[INFO] [stderr]     Checking structopt v0.2.10
[INFO] [stderr]     Checking fusenbd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.80s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.8
[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" "2fcb45b002581c285ad25d61a63f152db35a0c1da6ed5019dc40ec96e186e896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fcb45b002581c285ad25d61a63f152db35a0c1da6ed5019dc40ec96e186e896", kill_on_drop: false }`
[INFO] [stdout] 2fcb45b002581c285ad25d61a63f152db35a0c1da6ed5019dc40ec96e186e896
[INFO] checking vi/fusenbd against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvi%2Ffusenbd" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vi/fusenbd 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/vi/fusenbd
[INFO] finished tweaking git repo https://github.com/vi/fusenbd
[INFO] tweaked toml for git repo https://github.com/vi/fusenbd written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/vi/fusenbd 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] 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68b2f7fba04502375a9170ab646c2c750e08263ea445df78a0dc63acbdd1c255
[INFO] running `Command { std: "docker" "start" "-a" "68b2f7fba04502375a9170ab646c2c750e08263ea445df78a0dc63acbdd1c255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68b2f7fba04502375a9170ab646c2c750e08263ea445df78a0dc63acbdd1c255", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68b2f7fba04502375a9170ab646c2c750e08263ea445df78a0dc63acbdd1c255", kill_on_drop: false }`
[INFO] [stdout] 68b2f7fba04502375a9170ab646c2c750e08263ea445df78a0dc63acbdd1c255
[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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 859f6a2b4e16bf1a08fb6ed72ce19377f50dcfaf63edb019607dbcca30443935
[INFO] running `Command { std: "docker" "start" "-a" "859f6a2b4e16bf1a08fb6ed72ce19377f50dcfaf63edb019607dbcca30443935", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.13
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]    Compiling pkg-config v0.3.13
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking bitflags v1.0.3
[INFO] [stderr]     Checking thread-scoped v1.0.2
[INFO] [stderr]     Checking byteorder v1.2.4
[INFO] [stderr]     Checking log v0.4.4
[INFO] [stderr]     Checking bufstream v0.1.3
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking nbd v0.2.1
[INFO] [stderr]    Compiling fuse v0.3.1
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]    Compiling quote v0.6.6
[INFO] [stderr]    Compiling syn v0.14.8
[INFO] [stderr]     Checking readwriteseekfs v0.1.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/readwriteseekfs-0.1.0/src/lib.rs:146:13
[INFO] [stdout]     |
[INFO] [stdout] 146 |             Err(ErrorKind::InvalidInput)?;
[INFO] [stdout]     |             ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 146 |             Err::<T, ErrorKind>(ErrorKind::InvalidInput)?;
[INFO] [stdout]     |                ++++++++++++++++
[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 `readwriteseekfs` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "859f6a2b4e16bf1a08fb6ed72ce19377f50dcfaf63edb019607dbcca30443935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "859f6a2b4e16bf1a08fb6ed72ce19377f50dcfaf63edb019607dbcca30443935", kill_on_drop: false }`
[INFO] [stdout] 859f6a2b4e16bf1a08fb6ed72ce19377f50dcfaf63edb019607dbcca30443935