[INFO] fetching crate joule 0.2.0...
[INFO] checking joule-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate joule 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate joule 0.2.0
[INFO] finished tweaking crates.io crate joule 0.2.0
[INFO] tweaked toml for crates.io crate joule 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate joule 0.2.0 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 joule 0.2.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3efc7a7333dd84b99ef1fe76c2ae48ec6d3041a597ca3110b732731e01a7183b
[INFO] running `Command { std: "docker" "start" "-a" "3efc7a7333dd84b99ef1fe76c2ae48ec6d3041a597ca3110b732731e01a7183b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3efc7a7333dd84b99ef1fe76c2ae48ec6d3041a597ca3110b732731e01a7183b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3efc7a7333dd84b99ef1fe76c2ae48ec6d3041a597ca3110b732731e01a7183b", kill_on_drop: false }`
[INFO] [stdout] 3efc7a7333dd84b99ef1fe76c2ae48ec6d3041a597ca3110b732731e01a7183b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d6ffb5aba29a0d640a1dac66c125a8218b2ebec41139caa40ffeaac26572441a
[INFO] running `Command { std: "docker" "start" "-a" "d6ffb5aba29a0d640a1dac66c125a8218b2ebec41139caa40ffeaac26572441a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling libc v0.2.106
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking textwrap v0.14.2
[INFO] [stderr]     Checking temp-dir v0.1.11
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking flate2 v1.0.22
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking procfs v0.12.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking procfs v0.11.1
[INFO] [stderr]     Checking powercap v0.3.5
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.0
[INFO] [stderr]     Checking clap v3.0.4
[INFO] [stderr]     Checking joule v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/command.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     /// Path to powercap folder
[INFO] [stdout] 21 | |     #[clap(long, default_value = "/sys/class/powercap")]
[INFO] [stdout] 22 | |     powercap_path: PathBuf,
[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<PathBuf, Infallible>
[INFO] [stdout]   --> src/exporter.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | /         /// Path to the file to be created
[INFO] [stdout] 11 | |         output: PathBuf,
[INFO] [stdout]    | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/command.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | /     /// Path to powercap folder
[INFO] [stdout] 21 | |     #[clap(long, default_value = "/sys/class/powercap")]
[INFO] [stdout] 22 | |     powercap_path: PathBuf,
[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<PathBuf, Infallible>
[INFO] [stdout]   --> src/exporter.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 | /         /// Path to the file to be created
[INFO] [stdout] 11 | |         output: PathBuf,
[INFO] [stdout]    | |_______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `joule` (bin "joule") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `joule` (bin "joule" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d6ffb5aba29a0d640a1dac66c125a8218b2ebec41139caa40ffeaac26572441a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6ffb5aba29a0d640a1dac66c125a8218b2ebec41139caa40ffeaac26572441a", kill_on_drop: false }`
[INFO] [stdout] d6ffb5aba29a0d640a1dac66c125a8218b2ebec41139caa40ffeaac26572441a