[INFO] fetching crate const-writer 0.1.1...
[INFO] checking const-writer-0.1.1 against try#3d9fdbff4f377de96b3a51174e7a64086bee9a5c for pr-81477
[INFO] extracting crate const-writer 0.1.1 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate const-writer 0.1.1 on toolchain 3d9fdbff4f377de96b3a51174e7a64086bee9a5c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate const-writer 0.1.1
[INFO] finished tweaking crates.io crate const-writer 0.1.1
[INFO] tweaked toml for crates.io crate const-writer 0.1.1 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate crates.io crate const-writer 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "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-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 55f43588b56f51c2eecdeafd00e202d5e38cd9b4c291fa7ad8e88cfa2f89942e
[INFO] running `Command { std: "docker" "start" "-a" "55f43588b56f51c2eecdeafd00e202d5e38cd9b4c291fa7ad8e88cfa2f89942e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55f43588b56f51c2eecdeafd00e202d5e38cd9b4c291fa7ad8e88cfa2f89942e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55f43588b56f51c2eecdeafd00e202d5e38cd9b4c291fa7ad8e88cfa2f89942e", kill_on_drop: false }`
[INFO] [stdout] 55f43588b56f51c2eecdeafd00e202d5e38cd9b4c291fa7ad8e88cfa2f89942e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+3d9fdbff4f377de96b3a51174e7a64086bee9a5c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 550021de1ff49129866f2e1fa327e98dc815bf125fbb8d69e53ee90524257e71
[INFO] running `Command { std: "docker" "start" "-a" "550021de1ff49129866f2e1fa327e98dc815bf125fbb8d69e53ee90524257e71", kill_on_drop: false }`
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking const-writer v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:11:29
[INFO] [stdout]    |
[INFO] [stdout] 11 |     writer.write_u16_le(34).write_u16_le(2).write_u16_le(3).write_u16_le(4).write_u16_le(5)
[INFO] [stdout]    |                             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:11:45
[INFO] [stdout]    |
[INFO] [stdout] 11 |     writer.write_u16_le(34).write_u16_le(2).write_u16_le(3).write_u16_le(4).write_u16_le(5)
[INFO] [stdout]    |                                             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]    --> examples/main.rs:11:5
[INFO] [stdout]     |
[INFO] [stdout] 11  |     writer.write_u16_le(34).write_u16_le(2).write_u16_le(3).write_u16_le(4).write_u16_le(5)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 137 |     implement_write!(write_u16_le, u16, to_le_bytes);
[INFO] [stdout]     |     ------------------------------------------------- required by this bound in `ConstWriter::<T, N>::write_u16_le`
[INFO] [stdout]     |
[INFO] [stdout]     = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     writer.write_u16_le(34).write_u16_le(2).write_u16_le(3).write_u16_le(4).write_u16_le(5)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:11:61
[INFO] [stdout]    |
[INFO] [stdout] 11 |     writer.write_u16_le(34).write_u16_le(2).write_u16_le(3).write_u16_le(4).write_u16_le(5)
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]    --> examples/main.rs:11:5
[INFO] [stdout]     |
[INFO] [stdout] 11  |     writer.write_u16_le(34).write_u16_le(2).write_u16_le(3).write_u16_le(4).write_u16_le(5)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 137 |     implement_write!(write_u16_le, u16, to_le_bytes);
[INFO] [stdout]     |     ------------------------------------------------- required by this bound in `ConstWriter::<T, N>::write_u16_le`
[INFO] [stdout]     |
[INFO] [stdout]     = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     writer.write_u16_le(34).write_u16_le(2).write_u16_le(3).write_u16_le(4).write_u16_le(5)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:11:77
[INFO] [stdout]    |
[INFO] [stdout] 11 |     writer.write_u16_le(34).write_u16_le(2).write_u16_le(3).write_u16_le(4).write_u16_le(5)
[INFO] [stdout]    |                                                                             ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]    --> examples/main.rs:11:5
[INFO] [stdout]     |
[INFO] [stdout] 11  |     writer.write_u16_le(34).write_u16_le(2).write_u16_le(3).write_u16_le(4).write_u16_le(5)
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:137:5
[INFO] [stdout]     |
[INFO] [stdout] 137 |     implement_write!(write_u16_le, u16, to_le_bytes);
[INFO] [stdout]     |     ------------------------------------------------- required by this bound in `ConstWriter::<T, N>::write_u16_le`
[INFO] [stdout]     |
[INFO] [stdout]     = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     writer.write_u16_le(34).write_u16_le(2).write_u16_le(3).write_u16_le(4).write_u16_le(5)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:58:14
[INFO] [stdout]    |
[INFO] [stdout] 58 |             .write_u64_le(32)
[INFO] [stdout]    |              ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |             .write_u128_le(64)
[INFO] [stdout]    |              ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]    --> examples/main.rs:57:9
[INFO] [stdout]     |
[INFO] [stdout] 57  | /         writer
[INFO] [stdout] 58  | |             .write_u64_le(32)
[INFO] [stdout] 59  | |             .write_u128_le(64)
[INFO] [stdout]     | |______________________________^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 139 |       implement_write!(write_u64_le, u64, to_le_bytes);
[INFO] [stdout]     |       ------------------------------------------------- required by this bound in `ConstWriter::<T, N>::write_u64_le`
[INFO] [stdout]     |
[INFO] [stdout]     = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 | /         writer
[INFO] [stdout] 58 | |             .write_u64_le(32)
[INFO] [stdout] 59 | |             .write_u128_le(64)
[INFO] [stdout]    | |______________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]    --> examples/main.rs:61:9
[INFO] [stdout]     |
[INFO] [stdout] 61  |         writer.convert() // rust infer same len as top branch
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 |     implement_write!(write_u128_le, u128, to_le_bytes);
[INFO] [stdout]     |     --------------------------------------------------- required by this bound in `ConstWriter::<T, N>::write_u128_le`
[INFO] [stdout]     |
[INFO] [stdout]     = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         writer.convert() // rust infer same len as top branch
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]    --> examples/main.rs:61:9
[INFO] [stdout]     |
[INFO] [stdout] 61  |         writer.convert() // rust infer same len as top branch
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 139 |     implement_write!(write_u64_le, u64, to_le_bytes);
[INFO] [stdout]     |     ------------------------------------------------- required by this bound in `ConstWriter::<T, N>::write_u64_le`
[INFO] [stdout]     |
[INFO] [stdout]     = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]    --> examples/main.rs:64:16
[INFO] [stdout]     |
[INFO] [stdout] 64  |     assert_eq!(writer.remaining(), 4);
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 |     implement_write!(write_u128_le, u128, to_le_bytes);
[INFO] [stdout]     |     --------------------------------------------------- required by this bound in `ConstWriter::<T, N>::write_u128_le`
[INFO] [stdout]     |
[INFO] [stdout]     = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:64:16
[INFO] [stdout]    |
[INFO] [stdout] 64 |     assert_eq!(writer.remaining(), 4);
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]    --> examples/main.rs:64:16
[INFO] [stdout]     |
[INFO] [stdout] 64  |     assert_eq!(writer.remaining(), 4);
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 139 |     implement_write!(write_u64_le, u64, to_le_bytes);
[INFO] [stdout]     |     ------------------------------------------------- required by this bound in `ConstWriter::<T, N>::write_u64_le`
[INFO] [stdout]     |
[INFO] [stdout]     = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:65:12
[INFO] [stdout]    |
[INFO] [stdout] 65 |     writer.write_u32_le(48);
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]    --> examples/main.rs:65:5
[INFO] [stdout]     |
[INFO] [stdout] 65  |     writer.write_u32_le(48);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:140:5
[INFO] [stdout]     |
[INFO] [stdout] 140 |     implement_write!(write_u128_le, u128, to_le_bytes);
[INFO] [stdout]     |     --------------------------------------------------- required by this bound in `ConstWriter::<T, N>::write_u128_le`
[INFO] [stdout]     |
[INFO] [stdout]     = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]   --> examples/main.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 |     writer.write_u32_le(48);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unconstrained generic constant
[INFO] [stdout]    --> examples/main.rs:65:5
[INFO] [stdout]     |
[INFO] [stdout] 65  |     writer.write_u32_le(48);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: /opt/rustwide/workdir/src/lib.rs:139:5
[INFO] [stdout]     |
[INFO] [stdout] 139 |     implement_write!(write_u64_le, u64, to_le_bytes);
[INFO] [stdout]     |     ------------------------------------------------- required by this bound in `ConstWriter::<T, N>::write_u64_le`
[INFO] [stdout]     |
[INFO] [stdout]     = help: try adding a `where` bound using this expression: `where [(); {N - core::mem::size_of::<$type>()}]:`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 24 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `const-writer`
[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" "550021de1ff49129866f2e1fa327e98dc815bf125fbb8d69e53ee90524257e71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "550021de1ff49129866f2e1fa327e98dc815bf125fbb8d69e53ee90524257e71", kill_on_drop: false }`
[INFO] [stdout] 550021de1ff49129866f2e1fa327e98dc815bf125fbb8d69e53ee90524257e71