[INFO] fetching crate keg 1.2.1...
[INFO] checking keg-1.2.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate keg 1.2.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate keg 1.2.1
[INFO] finished tweaking crates.io crate keg 1.2.1
[INFO] tweaked toml for crates.io crate keg 1.2.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate keg 1.2.1 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 keg 1.2.1 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] fa489b9b9969af94b7720c701344a715e0956f2e1549fed50c59f3064f951de4
[INFO] running `Command { std: "docker" "start" "-a" "fa489b9b9969af94b7720c701344a715e0956f2e1549fed50c59f3064f951de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa489b9b9969af94b7720c701344a715e0956f2e1549fed50c59f3064f951de4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa489b9b9969af94b7720c701344a715e0956f2e1549fed50c59f3064f951de4", kill_on_drop: false }`
[INFO] [stdout] fa489b9b9969af94b7720c701344a715e0956f2e1549fed50c59f3064f951de4
[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] 36ca91b06222d86e314689dfba2ef4684c4e191e72d2612b5d1dc4979290499b
[INFO] running `Command { std: "docker" "start" "-a" "36ca91b06222d86e314689dfba2ef4684c4e191e72d2612b5d1dc4979290499b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling libseccomp-sys v0.2.1
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling pkg-config v0.3.32
[INFO] [stderr]    Compiling indoc v2.0.6
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling libseccomp v0.3.0
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking keg v1.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/seccomp.rs:42:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 ok_or!(u64::try_from(libc::TIOCSTI), return false)
[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<u64, Infallible>
[INFO] [stdout]   --> src/seccomp.rs:54:24
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 ok_or!(u64::try_from(libc::TIOCLINUX), return false)
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `keg` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/seccomp.rs:42:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 ok_or!(u64::try_from(libc::TIOCSTI), return false)
[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<u64, Infallible>
[INFO] [stdout]   --> src/seccomp.rs:54:24
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 ok_or!(u64::try_from(libc::TIOCLINUX), return false)
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `keg` (lib test) due to 2 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]   --> src/seccomp.rs:42:24
[INFO] [stdout]    |
[INFO] [stdout] 42 |                 ok_or!(u64::try_from(libc::TIOCSTI), return false)
[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<u64, Infallible>
[INFO] [stdout]   --> src/seccomp.rs:54:24
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 ok_or!(u64::try_from(libc::TIOCLINUX), return false)
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `keg` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "36ca91b06222d86e314689dfba2ef4684c4e191e72d2612b5d1dc4979290499b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36ca91b06222d86e314689dfba2ef4684c4e191e72d2612b5d1dc4979290499b", kill_on_drop: false }`
[INFO] [stdout] 36ca91b06222d86e314689dfba2ef4684c4e191e72d2612b5d1dc4979290499b