[INFO] fetching crate pcics 0.3.2...
[INFO] checking pcics-0.3.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate pcics 0.3.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate pcics 0.3.2
[INFO] finished tweaking crates.io crate pcics 0.3.2
[INFO] tweaked toml for crates.io crate pcics 0.3.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pcics 0.3.2 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding heterob v0.3.0 (available: v0.4.0)
[INFO] [stderr]       Adding pretty_assertions v0.7.2 (available: v1.4.1)
[INFO] [stderr]       Adding snafu v0.7.5 (available: v0.8.9)
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c9d82c31341caa7bee4296122787fd4432af961f970b8add45bd9291ba3fb10d
[INFO] running `Command { std: "docker" "start" "-a" "c9d82c31341caa7bee4296122787fd4432af961f970b8add45bd9291ba3fb10d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9d82c31341caa7bee4296122787fd4432af961f970b8add45bd9291ba3fb10d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9d82c31341caa7bee4296122787fd4432af961f970b8add45bd9291ba3fb10d", kill_on_drop: false }`
[INFO] [stdout] c9d82c31341caa7bee4296122787fd4432af961f970b8add45bd9291ba3fb10d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b7bbaf9c831049d95264e64d23398c37c75bc76b802d3a67a2ddcb8863c50d8f
[INFO] running `Command { std: "docker" "start" "-a" "b7bbaf9c831049d95264e64d23398c37c75bc76b802d3a67a2ddcb8863c50d8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling doc-comment v0.3.4
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking funty v2.0.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking pretty_assertions v0.7.2
[INFO] [stderr]     Checking heterob v0.3.0
[INFO] [stderr]    Compiling snafu-derive v0.7.5
[INFO] [stderr]     Checking snafu v0.7.5
[INFO] [stderr]     Checking pcics v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<class_code::ClassCode, Infallible>
[INFO] [stdout]    --> src/header/class_code.rs:245:33
[INFO] [stdout]     |
[INFO] [stdout] 245 |         let result: ClassCode = data.try_into().unwrap();
[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<header::Header, Infallible>
[INFO] [stdout]    --> src/header.rs:883:30
[INFO] [stdout]     |
[INFO] [stdout] 883 |         let result: Header = data.try_into().unwrap();
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<header::Header, Infallible>
[INFO] [stdout]    --> src/header.rs:979:30
[INFO] [stdout]     |
[INFO] [stdout] 979 |         let result: Header = data.try_into().unwrap();
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<&[u8], Infallible>
[INFO] [stdout]    --> src/extended_capabilities.rs:932:47
[INFO] [stdout]     |
[INFO] [stdout] 932 |         let ecaps = ExtendedCapabilities::new(DATA[ECS_OFFSET..].try_into().unwrap());
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pcics` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "b7bbaf9c831049d95264e64d23398c37c75bc76b802d3a67a2ddcb8863c50d8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7bbaf9c831049d95264e64d23398c37c75bc76b802d3a67a2ddcb8863c50d8f", kill_on_drop: false }`
[INFO] [stdout] b7bbaf9c831049d95264e64d23398c37c75bc76b802d3a67a2ddcb8863c50d8f
