[INFO] fetching crate f256 0.11.0...
[INFO] checking f256-0.11.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate f256 0.11.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate f256 0.11.0
[INFO] finished tweaking crates.io crate f256 0.11.0
[INFO] tweaked toml for crates.io crate f256 0.11.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate f256 0.11.0 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 f256 0.11.0 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] b8ec4c8b5768494088bb405dab9afcd7f63070649d9b2a2ee1353df10369e15c
[INFO] running `Command { std: "docker" "start" "-a" "b8ec4c8b5768494088bb405dab9afcd7f63070649d9b2a2ee1353df10369e15c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8ec4c8b5768494088bb405dab9afcd7f63070649d9b2a2ee1353df10369e15c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8ec4c8b5768494088bb405dab9afcd7f63070649d9b2a2ee1353df10369e15c", kill_on_drop: false }`
[INFO] [stdout] b8ec4c8b5768494088bb405dab9afcd7f63070649d9b2a2ee1353df10369e15c
[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] 29c66eaad2428c9ef3b65c47e43ed3e7fae4f6362b740b6e7cf62d4846f03f19
[INFO] running `Command { std: "docker" "start" "-a" "29c66eaad2428c9ef3b65c47e43ed3e7fae4f6362b740b6e7cf62d4846f03f19", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.97
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking f256_pow5_div_pow2_lut v0.1.1
[INFO] [stderr]     Checking f256_pow2_div_pow10_lut v0.2.0
[INFO] [stderr]     Checking f256_pow2_div_pow5_lut v0.1.1
[INFO] [stderr]     Checking f256_pow10_div_pow2_lut v0.1.1
[INFO] [stderr]     Checking csv-core v0.1.12
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.105
[INFO] [stderr]     Checking f256 v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stdout] error: this type will no longer be must used: Result<i128, Infallible>
[INFO] [stdout]    --> src/conv/to_int.rs:93:17
[INFO] [stdout]     |
[INFO] [stdout]  93 |                 Self::try_from(t).map_err(|_| IntoIntError::OutOfRange)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 100 | impl_try_from_f256_for_signed_int!();
[INFO] [stdout]     | ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `impl_try_from_f256_for_signed_int` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u128, Infallible>
[INFO] [stdout]    --> src/conv/to_int.rs:121:17
[INFO] [stdout]     |
[INFO] [stdout] 121 |                 Self::try_from(t).map_err(|_| IntoIntError::OutOfRange)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 128 | impl_try_from_f256_for_unsigned_int!();
[INFO] [stdout]     | -------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_try_from_f256_for_unsigned_int` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `f256` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "29c66eaad2428c9ef3b65c47e43ed3e7fae4f6362b740b6e7cf62d4846f03f19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29c66eaad2428c9ef3b65c47e43ed3e7fae4f6362b740b6e7cf62d4846f03f19", kill_on_drop: false }`
[INFO] [stdout] 29c66eaad2428c9ef3b65c47e43ed3e7fae4f6362b740b6e7cf62d4846f03f19