[INFO] fetching crate gpio-cdev 0.6.0...
[INFO] checking gpio-cdev-0.6.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate gpio-cdev 0.6.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate gpio-cdev 0.6.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate gpio-cdev 0.6.0
[INFO] tweaked toml for crates.io crate gpio-cdev 0.6.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate gpio-cdev 0.6.0 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate gpio-cdev 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 193db1a8e18f17e7c77dd25e417d710303fcb19079c23be2f865cc42d5aa1130
[INFO] running `Command { std: "docker" "start" "-a" "193db1a8e18f17e7c77dd25e417d710303fcb19079c23be2f865cc42d5aa1130", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "193db1a8e18f17e7c77dd25e417d710303fcb19079c23be2f865cc42d5aa1130", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "193db1a8e18f17e7c77dd25e417d710303fcb19079c23be2f865cc42d5aa1130", kill_on_drop: false }`
[INFO] [stdout] 193db1a8e18f17e7c77dd25e417d710303fcb19079c23be2f865cc42d5aa1130
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4bc9aae55792adc97c3692d70b0243424b1befbeed5dfb5186377ad2c97ce284
[INFO] running `Command { std: "docker" "start" "-a" "4bc9aae55792adc97c3692d70b0243424b1befbeed5dfb5186377ad2c97ce284", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling tokio v1.14.0
[INFO] [stderr]    Compiling anyhow v1.0.47
[INFO] [stderr]     Checking bitflags v2.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking nix v0.27.1
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking gpio-cdev v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking globset v0.4.8
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking ignore v0.4.18
[INFO] [stderr]     Checking globwalk v0.3.1
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling tokio-macros v1.6.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking clap-verbosity-flag v0.2.0
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking structopt v0.3.25
[INFO] [stderr]     Checking quicli v0.4.0
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/readinput.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     /// The gpiochip device (e.g. /dev/gpiochip0)
[INFO] [stdout] 16 | |     chip: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/tit_for_tat.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     /// The gpiochip device (e.g. /dev/gpiochip0)
[INFO] [stdout] 18 | |     chip: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gpio-cdev` (example "tit_for_tat") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `gpio-cdev` (example "readinput") due to 1 previous error
[INFO] [stderr] error: could not compile `gpio-cdev` (example "driveoutput") due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/driveoutput.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     /// The gpiochip device (e.g. /dev/gpiochip0)
[INFO] [stdout] 16 | |     chip: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/monitor.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | /     /// The gpiochip device (e.g. /dev/gpiochip0)
[INFO] [stdout] 20 | |     chip: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/multiread.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     /// The gpiochip device (e.g. /dev/gpiochip0)
[INFO] [stdout] 16 | |     chip: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/multioutput.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     /// The gpiochip device (e.g. /dev/gpiochip0)
[INFO] [stdout] 16 | |     chip: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/multioutput.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     /// The offset and value of each GPIO line for the provided chip
[INFO] [stdout] 18 | |     /// in the form "off=<0|1>"
[INFO] [stdout] 19 | |     line_values: Vec<String>,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gpio-cdev` (example "monitor") due to 1 previous error
[INFO] [stderr] error: could not compile `gpio-cdev` (example "multioutput") due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/readall.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     /// The gpiochip device (e.g. /dev/gpiochip0)
[INFO] [stdout] 16 | |     chip: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gpio-cdev` (example "multiread") due to 1 previous error
[INFO] [stderr] error: could not compile `gpio-cdev` (example "readall") due to 1 previous error
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/gpioevents.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | /     /// The gpiochip device (e.g. /dev/gpiochip0)
[INFO] [stdout] 16 | |     chip: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> examples/blinky.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     /// The gpiochip device (e.g. /dev/gpiochip0)
[INFO] [stdout] 18 | |     chip: String,
[INFO] [stdout]    | |________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `gpio-cdev` (example "gpioevents") due to 1 previous error
[INFO] [stderr] error: could not compile `gpio-cdev` (example "blinky") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "4bc9aae55792adc97c3692d70b0243424b1befbeed5dfb5186377ad2c97ce284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bc9aae55792adc97c3692d70b0243424b1befbeed5dfb5186377ad2c97ce284", kill_on_drop: false }`
[INFO] [stdout] 4bc9aae55792adc97c3692d70b0243424b1befbeed5dfb5186377ad2c97ce284
