[INFO] fetching crate i2cdev 0.5.0...
[INFO] checking i2cdev-0.5.0 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate i2cdev 0.5.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate i2cdev 0.5.0 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate i2cdev 0.5.0
[INFO] finished tweaking crates.io crate i2cdev 0.5.0
[INFO] tweaked toml for crates.io crate i2cdev 0.5.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate crates.io crate i2cdev 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9017b78f1023f4ae5c32f460eac99c775e1cf3be92148e25c18b9f0f53655389
[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" "9017b78f1023f4ae5c32f460eac99c775e1cf3be92148e25c18b9f0f53655389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9017b78f1023f4ae5c32f460eac99c775e1cf3be92148e25c18b9f0f53655389", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9017b78f1023f4ae5c32f460eac99c775e1cf3be92148e25c18b9f0f53655389", kill_on_drop: false }`
[INFO] [stdout] 9017b78f1023f4ae5c32f460eac99c775e1cf3be92148e25c18b9f0f53655389
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c730a510b9cbd5c2bbc9bae344226d6d4dbea233f3e479cabaaea14afcbbc69
[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" "4c730a510b9cbd5c2bbc9bae344226d6d4dbea233f3e479cabaaea14afcbbc69", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking nix v0.22.0
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]     Checking i2cdev v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.130
[INFO] [stderr]     Checking docopt v1.1.1
[INFO] [stdout] warning: field is never read: `joystick_x`
[INFO] [stdout]   --> examples/nunchuck.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         joystick_x: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `joystick_y`
[INFO] [stdout]   --> examples/nunchuck.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         joystick_y: u8,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `accel_x`
[INFO] [stdout]   --> examples/nunchuck.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         accel_x: u16, // 10-bit
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `accel_y`
[INFO] [stdout]   --> examples/nunchuck.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |         accel_y: u16, // 10-bit
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `accel_z`
[INFO] [stdout]   --> examples/nunchuck.rs:65:9
[INFO] [stdout]    |
[INFO] [stdout] 65 |         accel_z: u16, // 10-bit
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `c_button_pressed`
[INFO] [stdout]   --> examples/nunchuck.rs:66:9
[INFO] [stdout]    |
[INFO] [stdout] 66 |         c_button_pressed: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `z_button_pressed`
[INFO] [stdout]   --> examples/nunchuck.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 |         z_button_pressed: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.23s
[INFO] running `Command { std: "docker" "inspect" "4c730a510b9cbd5c2bbc9bae344226d6d4dbea233f3e479cabaaea14afcbbc69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c730a510b9cbd5c2bbc9bae344226d6d4dbea233f3e479cabaaea14afcbbc69", kill_on_drop: false }`
[INFO] [stdout] 4c730a510b9cbd5c2bbc9bae344226d6d4dbea233f3e479cabaaea14afcbbc69