[INFO] fetching crate mfrc522 0.2.0...
[INFO] testing mfrc522-0.2.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate mfrc522 0.2.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate mfrc522 0.2.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mfrc522 0.2.0
[INFO] finished tweaking crates.io crate mfrc522 0.2.0
[INFO] tweaked toml for crates.io crate mfrc522 0.2.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 49ff486f127156e31ce8c59737f114b74dfdb5e788357259250d707b008f12f7
[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" "49ff486f127156e31ce8c59737f114b74dfdb5e788357259250d707b008f12f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49ff486f127156e31ce8c59737f114b74dfdb5e788357259250d707b008f12f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49ff486f127156e31ce8c59737f114b74dfdb5e788357259250d707b008f12f7", kill_on_drop: false }`
[INFO] [stdout] 49ff486f127156e31ce8c59737f114b74dfdb5e788357259250d707b008f12f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1dfc1ccb132ec9a6d6a8fce8d4cb1713ede3286fa660ee1517d24d741621aad
[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" "e1dfc1ccb132ec9a6d6a8fce8d4cb1713ede3286fa660ee1517d24d741621aad", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stderr]    Compiling generic-array v0.11.1
[INFO] [stderr]    Compiling mfrc522 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated trait `hal::digital::OutputPin`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]   --> src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use hal::digital::OutputPin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `hal::digital::OutputPin`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]   --> src/lib.rs:95:10
[INFO] [stdout]    |
[INFO] [stdout] 95 |     NSS: OutputPin,
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:158:40
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut tx: [u8; 9] = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:316:60
[INFO] [stdout]     |
[INFO] [stdout] 316 |         let mut rx_buffer: GenericArray<u8, RX> = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `hal::digital::OutputPin::set_low`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]    --> src/lib.rs:388:18
[INFO] [stdout]     |
[INFO] [stdout] 388 |         self.nss.set_low();
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `hal::digital::OutputPin::set_high`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]    --> src/lib.rs:390:18
[INFO] [stdout]     |
[INFO] [stdout] 390 |         self.nss.set_high();
[INFO] [stdout]     |                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.35s
[INFO] running `Command { std: "docker" "inspect" "e1dfc1ccb132ec9a6d6a8fce8d4cb1713ede3286fa660ee1517d24d741621aad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1dfc1ccb132ec9a6d6a8fce8d4cb1713ede3286fa660ee1517d24d741621aad", kill_on_drop: false }`
[INFO] [stdout] e1dfc1ccb132ec9a6d6a8fce8d4cb1713ede3286fa660ee1517d24d741621aad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea26f7cc0b3a1f6c50c85af4364c936d092034a801a8e0a689e127a53ef93ed5
[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" "ea26f7cc0b3a1f6c50c85af4364c936d092034a801a8e0a689e127a53ef93ed5", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated trait `hal::digital::OutputPin`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]   --> src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use hal::digital::OutputPin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `hal::digital::OutputPin`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]   --> src/lib.rs:95:10
[INFO] [stdout]    |
[INFO] [stdout] 95 |     NSS: OutputPin,
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:158:40
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut tx: [u8; 9] = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:316:60
[INFO] [stdout]     |
[INFO] [stdout] 316 |         let mut rx_buffer: GenericArray<u8, RX> = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `hal::digital::OutputPin::set_low`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]    --> src/lib.rs:388:18
[INFO] [stdout]     |
[INFO] [stdout] 388 |         self.nss.set_low();
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `hal::digital::OutputPin::set_high`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]    --> src/lib.rs:390:18
[INFO] [stdout]     |
[INFO] [stdout] 390 |         self.nss.set_high();
[INFO] [stdout]     |                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mfrc522 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `linux_embedded_hal`
[INFO] [stdout]   --> examples/rpi.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | extern crate linux_embedded_hal as hal;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[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] [stderr] error: could not compile `mfrc522`
[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 trait `hal::digital::OutputPin`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]   --> src/lib.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | use hal::digital::OutputPin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `hal::digital::OutputPin`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]   --> src/lib.rs:95:10
[INFO] [stdout]    |
[INFO] [stdout] 95 |     NSS: OutputPin,
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:158:40
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let mut tx: [u8; 9] = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `core::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:316:60
[INFO] [stdout]     |
[INFO] [stdout] 316 |         let mut rx_buffer: GenericArray<u8, RX> = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `hal::digital::OutputPin::set_low`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]    --> src/lib.rs:388:18
[INFO] [stdout]     |
[INFO] [stdout] 388 |         self.nss.set_low();
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `hal::digital::OutputPin::set_high`: Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stdout]    --> src/lib.rs:390:18
[INFO] [stdout]     |
[INFO] [stdout] 390 |         self.nss.set_high();
[INFO] [stdout]     |                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ea26f7cc0b3a1f6c50c85af4364c936d092034a801a8e0a689e127a53ef93ed5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea26f7cc0b3a1f6c50c85af4364c936d092034a801a8e0a689e127a53ef93ed5", kill_on_drop: false }`
[INFO] [stdout] ea26f7cc0b3a1f6c50c85af4364c936d092034a801a8e0a689e127a53ef93ed5