[INFO] fetching crate libusb-native 0.1.0...
[INFO] testing libusb-native-0.1.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate libusb-native 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate libusb-native 0.1.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate libusb-native 0.1.0
[INFO] finished tweaking crates.io crate libusb-native 0.1.0
[INFO] tweaked toml for crates.io crate libusb-native 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e01abaff028804ca162e44bb45edaf864392548d02180d6c82c8bb366eadcad3
[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" "e01abaff028804ca162e44bb45edaf864392548d02180d6c82c8bb366eadcad3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e01abaff028804ca162e44bb45edaf864392548d02180d6c82c8bb366eadcad3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e01abaff028804ca162e44bb45edaf864392548d02180d6c82c8bb366eadcad3", kill_on_drop: false }`
[INFO] [stdout] e01abaff028804ca162e44bb45edaf864392548d02180d6c82c8bb366eadcad3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54ca029f4b64448f37e259df6128d7df319a151b33454584e1befec25e9f09ba
[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" "54ca029f4b64448f37e259df6128d7df319a151b33454584e1befec25e9f09ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling libusb-native v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(c_variadic, extern_types, ptr_wrapping_offset_from, thread_local)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut u8` in the current scope
[INFO] [stdout]     --> src/descriptor.rs:1218:18
[INFO] [stdout]      |
[INFO] [stdout] 1218 |     len = buffer.wrapping_offset_from(begin) as libc::c_long as libc::c_int;
[INFO] [stdout]      |                  ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]      |
[INFO] [stdout]      = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]      = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut u8` in the current scope
[INFO] [stdout]     --> src/descriptor.rs:1425:34
[INFO] [stdout]      |
[INFO] [stdout] 1425 |                     len = buffer.wrapping_offset_from(begin) as libc::c_long as libc::c_int;
[INFO] [stdout]      |                                  ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]      |
[INFO] [stdout]      = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]      = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut u8` in the current scope
[INFO] [stdout]     --> src/descriptor.rs:1661:22
[INFO] [stdout]      |
[INFO] [stdout] 1661 |         len = buffer.wrapping_offset_from(begin) as libc::c_long as libc::c_int;
[INFO] [stdout]      |                      ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]      |
[INFO] [stdout]      = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]      = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut os::linux_usbfs::usbfs_urb` in the current scope
[INFO] [stdout]     --> src/os/linux_usbfs.rs:4813:13
[INFO] [stdout]      |
[INFO] [stdout] 4813 |         urb.wrapping_offset_from((*tpriv).c2rust_unnamed.urbs) as libc::c_long as libc::c_int;
[INFO] [stdout]      |             ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]      |
[INFO] [stdout]      = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]      = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut u8` in the current scope
[INFO] [stdout]     --> src/os/linux_usbfs.rs:4877:59
[INFO] [stdout]      |
[INFO] [stdout] 4877 |                     ((*urb).buffer as *mut libc::c_uchar).wrapping_offset_from((*transfer).buffer)
[INFO] [stdout]      |                                                           ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]      |
[INFO] [stdout]      = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]      = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `wrapping_offset_from` found for raw pointer `*mut u8` in the current scope
[INFO] [stdout]     --> src/os/linux_usbfs.rs:4879:28
[INFO] [stdout]      |
[INFO] [stdout] 4879 |                     target.wrapping_offset_from((*transfer).buffer) as libc::c_long,
[INFO] [stdout]      |                            ^^^^^^^^^^^^^^^^^^^^ help: there is an associated function with a similar name: `wrapping_offset`
[INFO] [stdout]      |
[INFO] [stdout]      = note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
[INFO] [stdout]      = note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libusb-native`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "54ca029f4b64448f37e259df6128d7df319a151b33454584e1befec25e9f09ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54ca029f4b64448f37e259df6128d7df319a151b33454584e1befec25e9f09ba", kill_on_drop: false }`
[INFO] [stdout] 54ca029f4b64448f37e259df6128d7df319a151b33454584e1befec25e9f09ba
