[INFO] fetching crate index-set 0.2.0...
[INFO] checking index-set-0.2.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate index-set 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate index-set 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate index-set 0.2.0
[INFO] tweaked toml for crates.io crate index-set 0.2.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate index-set 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 index-set 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] f214d4c9645763450ecf4687f44dfa1aaadfbf4524abef1b2bad10bef26e6135
[INFO] running `Command { std: "docker" "start" "-a" "f214d4c9645763450ecf4687f44dfa1aaadfbf4524abef1b2bad10bef26e6135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f214d4c9645763450ecf4687f44dfa1aaadfbf4524abef1b2bad10bef26e6135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f214d4c9645763450ecf4687f44dfa1aaadfbf4524abef1b2bad10bef26e6135", kill_on_drop: false }`
[INFO] [stdout] f214d4c9645763450ecf4687f44dfa1aaadfbf4524abef1b2bad10bef26e6135
[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] ae9a066a3d2c65b11871daca2602fc32c25540e18f15892e6899e350e960c177
[INFO] running `Command { std: "docker" "start" "-a" "ae9a066a3d2c65b11871daca2602fc32c25540e18f15892e6899e350e960c177", kill_on_drop: false }`
[INFO] [stderr]     Checking index-set v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/bitset.rs:103:39
[INFO] [stdout]     |
[INFO] [stdout] 103 |                    let slot_idx = match usize::try_from(index / $ty::BITS as $ty) {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 155 | / impl_bit_set! {
[INFO] [stdout] 156 | |     u16, u32, u64, usize, u128
[INFO] [stdout] 157 | | }
[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_bit_set` (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<usize, Infallible>
[INFO] [stdout]    --> src/bitset.rs:133:38
[INFO] [stdout]     |
[INFO] [stdout] 133 |                   let slot_idx = match usize::try_from(index / $ty::BITS as $ty) {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 159 | / impl_atomic_bit_set! {
[INFO] [stdout] 160 | |     u32 for AtomicU32
[INFO] [stdout] 161 | |     u64 for AtomicU64
[INFO] [stdout] 162 | |     usize for AtomicUsize
[INFO] [stdout] 163 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_atomic_bit_set` (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<usize, Infallible>
[INFO] [stdout]    --> src/bitset_mut.rs:120:32
[INFO] [stdout]     |
[INFO] [stdout] 120 |                   let slot_idx = usize::try_from(index / $ty::BITS as $ty).unwrap();
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 | / impl_bit_set_mut! {
[INFO] [stdout] 144 | |     u16, u32, u64, usize, u128
[INFO] [stdout] 145 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_bit_set_mut` (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<usize, Infallible>
[INFO] [stdout]    --> src/bitset_mut.rs:131:32
[INFO] [stdout]     |
[INFO] [stdout] 131 |                   let slot_idx = usize::try_from(index / $ty::BITS as $ty).ok()?;
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 | / impl_bit_set_mut! {
[INFO] [stdout] 144 | |     u16, u32, u64, usize, u128
[INFO] [stdout] 145 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_bit_set_mut` (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<usize, Infallible>
[INFO] [stdout]    --> src/shared_bitset.rs:87:32
[INFO] [stdout]     |
[INFO] [stdout]  87 |                   let slot_idx = usize::try_from(index / $ty::BITS as $ty).ok()?;
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 | / impl_shared_bit_set! {
[INFO] [stdout] 113 | |     u32 for AtomicU32
[INFO] [stdout] 114 | |     u64 for AtomicU64
[INFO] [stdout] 115 | |     usize for AtomicUsize
[INFO] [stdout] 116 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_shared_bit_set` (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<usize, Infallible>
[INFO] [stdout]    --> src/shared_bitset.rs:99:32
[INFO] [stdout]     |
[INFO] [stdout]  99 |                   let slot_idx = usize::try_from(index / $ty::BITS as $ty).ok()?;
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 | / impl_shared_bit_set! {
[INFO] [stdout] 113 | |     u32 for AtomicU32
[INFO] [stdout] 114 | |     u64 for AtomicU64
[INFO] [stdout] 115 | |     usize for AtomicUsize
[INFO] [stdout] 116 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_shared_bit_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `index-set` (lib test) due to 6 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<usize, Infallible>
[INFO] [stdout]    --> src/bitset.rs:103:39
[INFO] [stdout]     |
[INFO] [stdout] 103 |                    let slot_idx = match usize::try_from(index / $ty::BITS as $ty) {
[INFO] [stdout]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 155 | / impl_bit_set! {
[INFO] [stdout] 156 | |     u16, u32, u64, usize, u128
[INFO] [stdout] 157 | | }
[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_bit_set` (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<usize, Infallible>
[INFO] [stdout]    --> src/bitset.rs:133:38
[INFO] [stdout]     |
[INFO] [stdout] 133 |                   let slot_idx = match usize::try_from(index / $ty::BITS as $ty) {
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 159 | / impl_atomic_bit_set! {
[INFO] [stdout] 160 | |     u32 for AtomicU32
[INFO] [stdout] 161 | |     u64 for AtomicU64
[INFO] [stdout] 162 | |     usize for AtomicUsize
[INFO] [stdout] 163 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_atomic_bit_set` (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<usize, Infallible>
[INFO] [stdout]    --> src/bitset_mut.rs:120:32
[INFO] [stdout]     |
[INFO] [stdout] 120 |                   let slot_idx = usize::try_from(index / $ty::BITS as $ty).unwrap();
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 | / impl_bit_set_mut! {
[INFO] [stdout] 144 | |     u16, u32, u64, usize, u128
[INFO] [stdout] 145 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_bit_set_mut` (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<usize, Infallible>
[INFO] [stdout]    --> src/bitset_mut.rs:131:32
[INFO] [stdout]     |
[INFO] [stdout] 131 |                   let slot_idx = usize::try_from(index / $ty::BITS as $ty).ok()?;
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 143 | / impl_bit_set_mut! {
[INFO] [stdout] 144 | |     u16, u32, u64, usize, u128
[INFO] [stdout] 145 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_bit_set_mut` (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<usize, Infallible>
[INFO] [stdout]    --> src/shared_bitset.rs:87:32
[INFO] [stdout]     |
[INFO] [stdout]  87 |                   let slot_idx = usize::try_from(index / $ty::BITS as $ty).ok()?;
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 | / impl_shared_bit_set! {
[INFO] [stdout] 113 | |     u32 for AtomicU32
[INFO] [stdout] 114 | |     u64 for AtomicU64
[INFO] [stdout] 115 | |     usize for AtomicUsize
[INFO] [stdout] 116 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_shared_bit_set` (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<usize, Infallible>
[INFO] [stdout]    --> src/shared_bitset.rs:99:32
[INFO] [stdout]     |
[INFO] [stdout]  99 |                   let slot_idx = usize::try_from(index / $ty::BITS as $ty).ok()?;
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 | / impl_shared_bit_set! {
[INFO] [stdout] 113 | |     u32 for AtomicU32
[INFO] [stdout] 114 | |     u64 for AtomicU64
[INFO] [stdout] 115 | |     usize for AtomicUsize
[INFO] [stdout] 116 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_shared_bit_set` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `index-set` (lib) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "ae9a066a3d2c65b11871daca2602fc32c25540e18f15892e6899e350e960c177", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae9a066a3d2c65b11871daca2602fc32c25540e18f15892e6899e350e960c177", kill_on_drop: false }`
[INFO] [stdout] ae9a066a3d2c65b11871daca2602fc32c25540e18f15892e6899e350e960c177