[INFO] fetching crate rfm9x 0.1.2...
[INFO] building rfm9x-0.1.2 against master#461e8078010433ff7de2db2aaae8a3cfb0847215 for pr-94962
[INFO] extracting crate rfm9x 0.1.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rfm9x 0.1.2 on toolchain 461e8078010433ff7de2db2aaae8a3cfb0847215
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] started tweaking crates.io crate rfm9x 0.1.2
[INFO] finished tweaking crates.io crate rfm9x 0.1.2
[INFO] tweaked toml for crates.io crate rfm9x 0.1.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate rfm9x 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6fb7f8af22e0047ddafa7afad35a0ed44c1ba7ce719e65c0ed2c9891c0afbdc
[INFO] running `Command { std: "docker" "start" "-a" "d6fb7f8af22e0047ddafa7afad35a0ed44c1ba7ce719e65c0ed2c9891c0afbdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6fb7f8af22e0047ddafa7afad35a0ed44c1ba7ce719e65c0ed2c9891c0afbdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6fb7f8af22e0047ddafa7afad35a0ed44c1ba7ce719e65c0ed2c9891c0afbdc", kill_on_drop: false }`
[INFO] [stdout] d6fb7f8af22e0047ddafa7afad35a0ed44c1ba7ce719e65c0ed2c9891c0afbdc
[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=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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8887c90dc7d80892246a8f90184537313b91d19b4f9b278cfca562321ad7e8e4
[INFO] running `Command { std: "docker" "start" "-a" "8887c90dc7d80892246a8f90184537313b91d19b4f9b278cfca562321ad7e8e4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[INFO] [stderr]    Compiling rppal v0.11.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.2
[INFO] [stderr]    Compiling rfm9x v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.23s
[INFO] [stdout] warning: field is never read: `old_mode`
[INFO] [stdout]    --> src/rfm95.rs:196:2
[INFO] [stdout]     |
[INFO] [stdout] 196 |     old_mode: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `ModeChangeFailedErrorInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/rfm95.rs:194:10
[INFO] [stdout]     |
[INFO] [stdout] 194 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `new_mode`
[INFO] [stdout]    --> src/rfm95.rs:197:2
[INFO] [stdout]     |
[INFO] [stdout] 197 |     new_mode: Mode,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ModeChangeFailedErrorInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/rfm95.rs:194:10
[INFO] [stdout]     |
[INFO] [stdout] 194 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `set_mode`
[INFO] [stdout]    --> src/rfm95.rs:198:2
[INFO] [stdout]     |
[INFO] [stdout] 198 |     set_mode: u8
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ModeChangeFailedErrorInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/rfm95.rs:194:10
[INFO] [stdout]     |
[INFO] [stdout] 194 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8887c90dc7d80892246a8f90184537313b91d19b4f9b278cfca562321ad7e8e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8887c90dc7d80892246a8f90184537313b91d19b4f9b278cfca562321ad7e8e4", kill_on_drop: false }`
[INFO] [stdout] 8887c90dc7d80892246a8f90184537313b91d19b4f9b278cfca562321ad7e8e4
[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=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@sha256:1ede1414886370302e694df474b9877c02906499f04c196936ce0973d30c5eaa" "/opt/rustwide/cargo-home/bin/cargo" "+461e8078010433ff7de2db2aaae8a3cfb0847215" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 965c3bfe8812303b0cff816ac8ca49a326e6387ce756783107947519d644b4ec
[INFO] running `Command { std: "docker" "start" "-a" "965c3bfe8812303b0cff816ac8ca49a326e6387ce756783107947519d644b4ec", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: field is never read: `old_mode`
[INFO] [stdout]    --> src/rfm95.rs:196:2
[INFO] [stdout]     |
[INFO] [stdout] 196 |     old_mode: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `ModeChangeFailedErrorInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/rfm95.rs:194:10
[INFO] [stdout]     |
[INFO] [stdout] 194 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling rfm9x v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `new_mode`
[INFO] [stdout]    --> src/rfm95.rs:197:2
[INFO] [stdout]     |
[INFO] [stdout] 197 |     new_mode: Mode,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ModeChangeFailedErrorInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/rfm95.rs:194:10
[INFO] [stdout]     |
[INFO] [stdout] 194 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `set_mode`
[INFO] [stdout]    --> src/rfm95.rs:198:2
[INFO] [stdout]     |
[INFO] [stdout] 198 |     set_mode: u8
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ModeChangeFailedErrorInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/rfm95.rs:194:10
[INFO] [stdout]     |
[INFO] [stdout] 194 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `old_mode`
[INFO] [stdout]    --> src/rfm95.rs:196:2
[INFO] [stdout]     |
[INFO] [stdout] 196 |     old_mode: u8,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `ModeChangeFailedErrorInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/rfm95.rs:194:10
[INFO] [stdout]     |
[INFO] [stdout] 194 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `new_mode`
[INFO] [stdout]    --> src/rfm95.rs:197:2
[INFO] [stdout]     |
[INFO] [stdout] 197 |     new_mode: Mode,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ModeChangeFailedErrorInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/rfm95.rs:194:10
[INFO] [stdout]     |
[INFO] [stdout] 194 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `set_mode`
[INFO] [stdout]    --> src/rfm95.rs:198:2
[INFO] [stdout]     |
[INFO] [stdout] 198 |     set_mode: u8
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: `ModeChangeFailedErrorInfo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    --> src/rfm95.rs:194:10
[INFO] [stdout]     |
[INFO] [stdout] 194 | #[derive(Debug)]
[INFO] [stdout]     |          ^^^^^
[INFO] [stdout]     = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.92s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/rfm9x-f8a2b099a0dabba2)
[INFO] running `Command { std: "docker" "inspect" "965c3bfe8812303b0cff816ac8ca49a326e6387ce756783107947519d644b4ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "965c3bfe8812303b0cff816ac8ca49a326e6387ce756783107947519d644b4ec", kill_on_drop: false }`
[INFO] [stdout] 965c3bfe8812303b0cff816ac8ca49a326e6387ce756783107947519d644b4ec