[INFO] fetching crate btree-slab 0.2.0...
[INFO] checking btree-slab-0.2.0 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate btree-slab 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate btree-slab 0.2.0 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate btree-slab 0.2.0
[INFO] finished tweaking crates.io crate btree-slab 0.2.0
[INFO] tweaked toml for crates.io crate btree-slab 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cc-traits v0.4.0
[INFO] [stderr]   Downloaded staticvec v0.10.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf35d32538d37b277f5059963a473ce808dc24e9fc0c6301ab89a2dad457cf14
[INFO] running `Command { std: "docker" "start" "-a" "bf35d32538d37b277f5059963a473ce808dc24e9fc0c6301ab89a2dad457cf14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf35d32538d37b277f5059963a473ce808dc24e9fc0c6301ab89a2dad457cf14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf35d32538d37b277f5059963a473ce808dc24e9fc0c6301ab89a2dad457cf14", kill_on_drop: false }`
[INFO] [stdout] bf35d32538d37b277f5059963a473ce808dc24e9fc0c6301ab89a2dad457cf14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51f71d195540242a0599edc18229c86196ee4360cdbf87ced4a421830bcf15c2
[INFO] running `Command { std: "docker" "start" "-a" "51f71d195540242a0599edc18229c86196ee4360cdbf87ced4a421830bcf15c2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking staticvec v0.10.8
[INFO] [stderr]     Checking cc-traits v0.4.0
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/lib.rs:771:5
[INFO] [stdout]     |
[INFO] [stdout] 771 |     self.mut_ptr_at_unchecked(length).write(value);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/lib.rs:1021:14
[INFO] [stdout]      |
[INFO] [stdout] 1021 |         Some(ptr::replace(self.mut_ptr_at_unchecked(index), last_value))
[INFO] [stdout]      |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/lib.rs:1049:7
[INFO] [stdout]      |
[INFO] [stdout] 1049 |       ptr::replace(self.mut_ptr_at_unchecked(index), last_value)
[INFO] [stdout]      |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/lib.rs:1074:7
[INFO] [stdout]      |
[INFO] [stdout] 1074 |       self_ptr.write(value);
[INFO] [stdout]      |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/lib.rs:1729:9
[INFO] [stdout]      |
[INFO] [stdout] 1729 |         res_ptr.write(self.ptr_at_unchecked(i).read());
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/lib.rs:1730:9
[INFO] [stdout]      |
[INFO] [stdout] 1730 |         res_ptr.offset(1).write(separator);
[INFO] [stdout]      |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/lib.rs:1736:7
[INFO] [stdout]      |
[INFO] [stdout] 1736 |       res_ptr.write(self.ptr_at_unchecked(i).read());
[INFO] [stdout]      |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/string/string_utils.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     dest.write(code as u8);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/string/string_utils.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     dest.write((code >> 6 & 0x1F) as u8 | TAG_TWO_B);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/string/string_utils.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     dest.offset(1).write((code & 0x3F) as u8 | TAG_CONT);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/string/string_utils.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     dest.write((code >> 12 & 0x0F) as u8 | TAG_THREE_B);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/string/string_utils.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     dest.offset(1).write((code >> 6 & 0x3F) as u8 | TAG_CONT);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/string/string_utils.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 |     dest.offset(2).write((code & 0x3F) as u8 | TAG_CONT);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/string/string_utils.rs:44:5
[INFO] [stdout]    |
[INFO] [stdout] 44 |     dest.write((code >> 18 & 0x07) as u8 | TAG_FOUR_B);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/string/string_utils.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 |     dest.offset(1).write((code >> 12 & 0x3F) as u8 | TAG_CONT);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/string/string_utils.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 46 |     dest.offset(2).write((code >> 6 & 0x3F) as u8 | TAG_CONT);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0015]: calls in constant functions are limited to constant functions, tuple structs and tuple variants
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/staticvec-0.10.8/src/string/string_utils.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 |     dest.offset(3).write((code & 0x3F) as u8 | TAG_CONT);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 17 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0015`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `staticvec`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "51f71d195540242a0599edc18229c86196ee4360cdbf87ced4a421830bcf15c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51f71d195540242a0599edc18229c86196ee4360cdbf87ced4a421830bcf15c2", kill_on_drop: false }`
[INFO] [stdout] 51f71d195540242a0599edc18229c86196ee4360cdbf87ced4a421830bcf15c2