[INFO] crate drakey-fuse 0.4.2-alpha is already in cache
[INFO] testing drakey-fuse-0.4.2-alpha against 1.45.2 for beta-1.46-1
[INFO] extracting crate drakey-fuse 0.4.2-alpha into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate drakey-fuse 0.4.2-alpha on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate drakey-fuse 0.4.2-alpha
[INFO] finished tweaking crates.io crate drakey-fuse 0.4.2-alpha
[INFO] tweaked toml for crates.io crate drakey-fuse 0.4.2-alpha written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5d8d8d7b4b534dce54a9f9c7b80cdb2d235fe269ff20f7a5af156d3dd6e75d0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e5d8d8d7b4b534dce54a9f9c7b80cdb2d235fe269ff20f7a5af156d3dd6e75d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5d8d8d7b4b534dce54a9f9c7b80cdb2d235fe269ff20f7a5af156d3dd6e75d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5d8d8d7b4b534dce54a9f9c7b80cdb2d235fe269ff20f7a5af156d3dd6e75d0", kill_on_drop: false }`
[INFO] [stdout] e5d8d8d7b4b534dce54a9f9c7b80cdb2d235fe269ff20f7a5af156d3dd6e75d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 500a9d4984fc5e81e7117d5e029b5dd4ff7f12bab616505b9d895bb38f4d3a64
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "500a9d4984fc5e81e7117d5e029b5dd4ff7f12bab616505b9d895bb38f4d3a64", kill_on_drop: false }`
[INFO] [stderr]    Compiling drakey-fuse-sys v0.5.0
[INFO] [stderr]    Compiling drakey-fuse v0.4.2-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/channel.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mountpoint = try!(mountpoint.canonicalize());
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/channel.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let mnt = try!(CString::new(mountpoint.as_os_str().as_bytes()));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:149:15
[INFO] [stdout]     |
[INFO] [stdout] 149 |     let mnt = try!(CString::new(mountpoint.as_os_str().as_bytes()));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reply.rs:32:25
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl fmt::Debug for Box<ReplySender> {
[INFO] [stdout]    |                         ^^^^^^^^^^^ help: use `dyn`: `dyn ReplySender`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/reply.rs:126:24
[INFO] [stdout]     |
[INFO] [stdout] 126 |     sender: Option<Box<ReplySender>>,
[INFO] [stdout]     |                        ^^^^^^^^^^^ help: use `dyn`: `dyn ReplySender`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/request.rs:396:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ---------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 396 |             FUSE_POLL => {
[INFO] [stdout]     |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:34
[INFO] [stdout]     |
[INFO] [stdout] 7   | #![warn(missing_docs, bad_style, unused, unused_extern_crates, unused_import_braces, unused_qualifications, missing_debug_implementations)]
[INFO] [stdout]     |                                  ^^^^^^
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/request.rs:402:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ---------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 402 |             FUSE_BMAP => {
[INFO] [stdout]     |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/request.rs:426:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ---------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 426 |             CUSE_INIT => {
[INFO] [stdout]     |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `FUSE_IOCTL`
[INFO] [stdout]    --> src/request.rs:382:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_FUSE_IOCTL`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:34
[INFO] [stdout]     |
[INFO] [stdout] 7   | #![warn(missing_docs, bad_style, unused, unused_extern_crates, unused_import_braces, unused_qualifications, missing_debug_implementations)]
[INFO] [stdout]     |                                  ^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `FUSE_POLL`
[INFO] [stdout]    --> src/request.rs:396:13
[INFO] [stdout]     |
[INFO] [stdout] 396 |             FUSE_POLL => {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_FUSE_POLL`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]    --> src/request.rs:397:21
[INFO] [stdout]     |
[INFO] [stdout] 397 |                 let arg: &fuse_poll_in = data.fetch();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]    --> src/request.rs:427:21
[INFO] [stdout]     |
[INFO] [stdout] 427 |                 let arg: &cuse_init_in = data.fetch();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `FUSE_IOCTL` should have a snake case name
[INFO] [stdout]    --> src/request.rs:382:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ^^^^^^^^^^ help: convert the identifier to snake case: `fuse_ioctl`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:23
[INFO] [stdout]     |
[INFO] [stdout] 7   | #![warn(missing_docs, bad_style, unused, unused_extern_crates, unused_import_braces, unused_qualifications, missing_debug_implementations)]
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` implied by `#[warn(bad_style)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `FUSE_POLL` should have a snake case name
[INFO] [stdout]    --> src/request.rs:396:13
[INFO] [stdout]     |
[INFO] [stdout] 396 |             FUSE_POLL => {
[INFO] [stdout]     |             ^^^^^^^^^ help: convert the identifier to snake case: `fuse_poll`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.78s
[INFO] running `Command { std: "docker" "inspect" "500a9d4984fc5e81e7117d5e029b5dd4ff7f12bab616505b9d895bb38f4d3a64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "500a9d4984fc5e81e7117d5e029b5dd4ff7f12bab616505b9d895bb38f4d3a64", kill_on_drop: false }`
[INFO] [stdout] 500a9d4984fc5e81e7117d5e029b5dd4ff7f12bab616505b9d895bb38f4d3a64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 685e3d6972061b946ecf71d9cadb08d79da9e0689029a6c310e4165a1e34eda1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "685e3d6972061b946ecf71d9cadb08d79da9e0689029a6c310e4165a1e34eda1", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/channel.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mountpoint = try!(mountpoint.canonicalize());
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/channel.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let mnt = try!(CString::new(mountpoint.as_os_str().as_bytes()));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:149:15
[INFO] [stdout]     |
[INFO] [stdout] 149 |     let mnt = try!(CString::new(mountpoint.as_os_str().as_bytes()));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reply.rs:32:25
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl fmt::Debug for Box<ReplySender> {
[INFO] [stdout]    |                         ^^^^^^^^^^^ help: use `dyn`: `dyn ReplySender`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/reply.rs:126:24
[INFO] [stdout]     |
[INFO] [stdout] 126 |     sender: Option<Box<ReplySender>>,
[INFO] [stdout]     |                        ^^^^^^^^^^^ help: use `dyn`: `dyn ReplySender`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/request.rs:396:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ---------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 396 |             FUSE_POLL => {
[INFO] [stdout]     |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:34
[INFO] [stdout]     |
[INFO] [stdout] 7   | #![warn(missing_docs, bad_style, unused, unused_extern_crates, unused_import_braces, unused_qualifications, missing_debug_implementations)]
[INFO] [stdout]     |                                  ^^^^^^
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/request.rs:402:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ---------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 402 |             FUSE_BMAP => {
[INFO] [stdout]     |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/request.rs:426:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ---------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 426 |             CUSE_INIT => {
[INFO] [stdout]     |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `FUSE_IOCTL`
[INFO] [stdout]    --> src/request.rs:382:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_FUSE_IOCTL`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:34
[INFO] [stdout]     |
[INFO] [stdout] 7   | #![warn(missing_docs, bad_style, unused, unused_extern_crates, unused_import_braces, unused_qualifications, missing_debug_implementations)]
[INFO] [stdout]     |                                  ^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `FUSE_POLL`
[INFO] [stdout]    --> src/request.rs:396:13
[INFO] [stdout]     |
[INFO] [stdout] 396 |             FUSE_POLL => {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_FUSE_POLL`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]    --> src/request.rs:397:21
[INFO] [stdout]     |
[INFO] [stdout] 397 |                 let arg: &fuse_poll_in = data.fetch();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]    --> src/request.rs:427:21
[INFO] [stdout]     |
[INFO] [stdout] 427 |                 let arg: &cuse_init_in = data.fetch();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `FUSE_IOCTL` should have a snake case name
[INFO] [stdout]    --> src/request.rs:382:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ^^^^^^^^^^ help: convert the identifier to snake case: `fuse_ioctl`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:23
[INFO] [stdout]     |
[INFO] [stdout] 7   | #![warn(missing_docs, bad_style, unused, unused_extern_crates, unused_import_braces, unused_qualifications, missing_debug_implementations)]
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` implied by `#[warn(bad_style)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `FUSE_POLL` should have a snake case name
[INFO] [stdout]    --> src/request.rs:396:13
[INFO] [stdout]     |
[INFO] [stdout] 396 |             FUSE_POLL => {
[INFO] [stdout]     |             ^^^^^^^^^ help: convert the identifier to snake case: `fuse_poll`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling drakey-fuse v0.4.2-alpha (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `fuse`
[INFO] [stdout]  --> examples/hello.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate fuse;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `fuse`
[INFO] [stdout]  --> examples/null.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate fuse;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `drakey-fuse`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/channel.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let mountpoint = try!(mountpoint.canonicalize());
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/channel.rs:38:23
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let mnt = try!(CString::new(mountpoint.as_os_str().as_bytes()));
[INFO] [stdout]    |                       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/channel.rs:149:15
[INFO] [stdout]     |
[INFO] [stdout] 149 |     let mnt = try!(CString::new(mountpoint.as_os_str().as_bytes()));
[INFO] [stdout]     |               ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reply.rs:32:25
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl fmt::Debug for Box<ReplySender> {
[INFO] [stdout]    |                         ^^^^^^^^^^^ help: use `dyn`: `dyn ReplySender`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/reply.rs:126:24
[INFO] [stdout]     |
[INFO] [stdout] 126 |     sender: Option<Box<ReplySender>>,
[INFO] [stdout]     |                        ^^^^^^^^^^^ help: use `dyn`: `dyn ReplySender`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/request.rs:396:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ---------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 396 |             FUSE_POLL => {
[INFO] [stdout]     |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:34
[INFO] [stdout]     |
[INFO] [stdout] 7   | #![warn(missing_docs, bad_style, unused, unused_extern_crates, unused_import_braces, unused_qualifications, missing_debug_implementations)]
[INFO] [stdout]     |                                  ^^^^^^
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/request.rs:402:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ---------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 402 |             FUSE_BMAP => {
[INFO] [stdout]     |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/request.rs:426:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ---------- matches any value
[INFO] [stdout] ...
[INFO] [stdout] 426 |             CUSE_INIT => {
[INFO] [stdout]     |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `FUSE_IOCTL`
[INFO] [stdout]    --> src/request.rs:382:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_FUSE_IOCTL`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:34
[INFO] [stdout]     |
[INFO] [stdout] 7   | #![warn(missing_docs, bad_style, unused, unused_extern_crates, unused_import_braces, unused_qualifications, missing_debug_implementations)]
[INFO] [stdout]     |                                  ^^^^^^
[INFO] [stdout]     = note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `FUSE_POLL`
[INFO] [stdout]    --> src/request.rs:396:13
[INFO] [stdout]     |
[INFO] [stdout] 396 |             FUSE_POLL => {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_FUSE_POLL`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]    --> src/request.rs:397:21
[INFO] [stdout]     |
[INFO] [stdout] 397 |                 let arg: &fuse_poll_in = data.fetch();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arg`
[INFO] [stdout]    --> src/request.rs:427:21
[INFO] [stdout]     |
[INFO] [stdout] 427 |                 let arg: &cuse_init_in = data.fetch();
[INFO] [stdout]     |                     ^^^ help: if this is intentional, prefix it with an underscore: `_arg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `FUSE_IOCTL` should have a snake case name
[INFO] [stdout]    --> src/request.rs:382:13
[INFO] [stdout]     |
[INFO] [stdout] 382 |             FUSE_IOCTL => {
[INFO] [stdout]     |             ^^^^^^^^^^ help: convert the identifier to snake case: `fuse_ioctl`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:7:23
[INFO] [stdout]     |
[INFO] [stdout] 7   | #![warn(missing_docs, bad_style, unused, unused_extern_crates, unused_import_braces, unused_qualifications, missing_debug_implementations)]
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` implied by `#[warn(bad_style)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `FUSE_POLL` should have a snake case name
[INFO] [stdout]    --> src/request.rs:396:13
[INFO] [stdout]     |
[INFO] [stdout] 396 |             FUSE_POLL => {
[INFO] [stdout]     |             ^^^^^^^^^ help: convert the identifier to snake case: `fuse_poll`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "685e3d6972061b946ecf71d9cadb08d79da9e0689029a6c310e4165a1e34eda1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "685e3d6972061b946ecf71d9cadb08d79da9e0689029a6c310e4165a1e34eda1", kill_on_drop: false }`
[INFO] [stdout] 685e3d6972061b946ecf71d9cadb08d79da9e0689029a6c310e4165a1e34eda1