[INFO] fetching crate nibblecode 0.1.0...
[INFO] testing nibblecode-0.1.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate nibblecode 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate nibblecode 0.1.0
[INFO] finished tweaking crates.io crate nibblecode 0.1.0
[INFO] tweaked toml for crates.io crate nibblecode 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nibblecode 0.1.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nibblecode 0.1.0 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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nibblecode_derive v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 11f025e7e7a17448c719ce1b47af66d4b91ff77fb6658f097003c4dced60e381
[INFO] running `Command { std: "docker" "start" "-a" "11f025e7e7a17448c719ce1b47af66d4b91ff77fb6658f097003c4dced60e381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "11f025e7e7a17448c719ce1b47af66d4b91ff77fb6658f097003c4dced60e381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11f025e7e7a17448c719ce1b47af66d4b91ff77fb6658f097003c4dced60e381", kill_on_drop: false }`
[INFO] [stdout] 11f025e7e7a17448c719ce1b47af66d4b91ff77fb6658f097003c4dced60e381
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6fea05088c0ba72cc8feb6205288a7a8a3aed901d55af56ef02d984fe056c2c
[INFO] running `Command { std: "docker" "start" "-a" "b6fea05088c0ba72cc8feb6205288a7a8a3aed901d55af56ef02d984fe056c2c", kill_on_drop: false }`
[INFO] [stderr]    Compiling rend v0.5.2
[INFO] [stderr]    Compiling syn v2.0.102
[INFO] [stderr]    Compiling nibblecode_derive v0.1.0
[INFO] [stderr]    Compiling nibblecode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.55s
[INFO] running `Command { std: "docker" "inspect" "b6fea05088c0ba72cc8feb6205288a7a8a3aed901d55af56ef02d984fe056c2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6fea05088c0ba72cc8feb6205288a7a8a3aed901d55af56ef02d984fe056c2c", kill_on_drop: false }`
[INFO] [stdout] b6fea05088c0ba72cc8feb6205288a7a8a3aed901d55af56ef02d984fe056c2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c611208083b0039d04750251011f6b2452e7e1168d6f686d0ad40e501e655a3
[INFO] running `Command { std: "docker" "start" "-a" "2c611208083b0039d04750251011f6b2452e7e1168d6f686d0ad40e501e655a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling nibblecode v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `TupleFoo` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:386:14
[INFO] [stdout]     |
[INFO] [stdout] 386 |         pub struct TupleFoo<T = i32>(T);
[INFO] [stdout]     |                    ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StructFoo` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:390:14
[INFO] [stdout]     |
[INFO] [stdout] 390 |         pub struct StructFoo<T = i32> {
[INFO] [stdout]     |                    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `EnumFoo` is never used
[INFO] [stdout]    --> src/impls/mod.rs:396:12
[INFO] [stdout]     |
[INFO] [stdout] 396 |         pub enum EnumFoo<T = i32> {
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Array` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:414:14
[INFO] [stdout]     |
[INFO] [stdout] 414 |         pub struct Array<T, const N: usize>([T; N]);
[INFO] [stdout]     |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Example` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:550:10
[INFO] [stdout]     |
[INFO] [stdout] 550 |         struct Example {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Wrapper` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:558:10
[INFO] [stdout]     |
[INFO] [stdout] 558 |         struct Wrapper<T> {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Example` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:565:10
[INFO] [stdout]     |
[INFO] [stdout] 565 |         struct Example {
[INFO] [stdout]     |                ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Test` is never constructed
[INFO] [stdout]    --> src/impls/mod.rs:576:10
[INFO] [stdout]     |
[INFO] [stdout] 576 |         struct Test<'a> {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.65s
[INFO] running `Command { std: "docker" "inspect" "2c611208083b0039d04750251011f6b2452e7e1168d6f686d0ad40e501e655a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c611208083b0039d04750251011f6b2452e7e1168d6f686d0ad40e501e655a3", kill_on_drop: false }`
[INFO] [stdout] 2c611208083b0039d04750251011f6b2452e7e1168d6f686d0ad40e501e655a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1643c35739db7cd2eb571c9963d2b24a35e4ccf614f1a23bcb282f61d63f9f86
[INFO] running `Command { std: "docker" "start" "-a" "1643c35739db7cd2eb571c9963d2b24a35e4ccf614f1a23bcb282f61d63f9f86", kill_on_drop: false }`
[INFO] [stderr] warning: struct `TupleFoo` is never constructed
[INFO] [stderr]    --> src/impls/mod.rs:386:14
[INFO] [stderr]     |
[INFO] [stderr] 386 |         pub struct TupleFoo<T = i32>(T);
[INFO] [stderr]     |                    ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `StructFoo` is never constructed
[INFO] [stderr]    --> src/impls/mod.rs:390:14
[INFO] [stderr]     |
[INFO] [stderr] 390 |         pub struct StructFoo<T = i32> {
[INFO] [stderr]     |                    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `EnumFoo` is never used
[INFO] [stderr]    --> src/impls/mod.rs:396:12
[INFO] [stderr]     |
[INFO] [stderr] 396 |         pub enum EnumFoo<T = i32> {
[INFO] [stderr]     |                  ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Array` is never constructed
[INFO] [stderr]    --> src/impls/mod.rs:414:14
[INFO] [stderr]     |
[INFO] [stderr] 414 |         pub struct Array<T, const N: usize>([T; N]);
[INFO] [stderr]     |                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Example` is never constructed
[INFO] [stderr]    --> src/impls/mod.rs:550:10
[INFO] [stderr]     |
[INFO] [stderr] 550 |         struct Example {
[INFO] [stderr]     |                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Wrapper` is never constructed
[INFO] [stderr]    --> src/impls/mod.rs:558:10
[INFO] [stderr]     |
[INFO] [stderr] 558 |         struct Wrapper<T> {
[INFO] [stderr]     |                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Example` is never constructed
[INFO] [stderr]    --> src/impls/mod.rs:565:10
[INFO] [stderr]     |
[INFO] [stderr] 565 |         struct Example {
[INFO] [stderr]     |                ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Test` is never constructed
[INFO] [stderr]    --> src/impls/mod.rs:576:10
[INFO] [stderr]     |
[INFO] [stderr] 576 |         struct Test<'a> {
[INFO] [stderr]     |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `nibblecode` (lib test) generated 8 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/nibblecode-1f4ec5d873534fde)
[INFO] [stdout] 
[INFO] [stdout] running 55 tests
[INFO] [stdout] test impls::alloc::boxed::tests::roundtrip_box_zsts ... ok
[INFO] [stdout] test impls::alloc::boxed::tests::roundtrip_boxed_str ... ok
[INFO] [stdout] test impls::alloc::boxed::tests::roundtrip_boxed_slice ... ok
[INFO] [stdout] test impls::alloc::boxed::tests::roundtrip_option_box_slice ... ok
[INFO] [stdout] test impls::alloc::string::tests::roundtrip_option_string ... ok
[INFO] [stdout] test impls::alloc::string::tests::roundtrip_result_string ... ok
[INFO] [stdout] test impls::alloc::boxed::tests::roundtrip_result_box_slice ... ok
[INFO] [stdout] test impls::alloc::boxed::tests::roundtrip_result_box ... ok
[INFO] [stdout] test impls::alloc::vec::tests::roundtrip_result_vec ... ok
[INFO] [stdout] test impls::alloc::vec::tests::roundtrip_option_vec ... ok
[INFO] [stdout] test impls::core::primitive::tests::roundtrip_portable_primitives ... ok
[INFO] [stdout] test impls::core::primitive::tests::roundtrip_multibyte_primitives ... ok
[INFO] [stdout] test impls::core::tests::roundtrip_array ... ok
[INFO] [stdout] test impls::alloc::vec::tests::roundtrip_vec_zst ... ok
[INFO] [stdout] test impls::core::result::tests::roundtrip_result ... ok
[INFO] [stdout] test impls::alloc_tests::struct_container_mutable_refs ... ok
[INFO] [stdout] test impls::core::primitive::tests::roundtrip_sizes ... ok
[INFO] [stdout] test impls::alloc::vec::tests::roundtrip_vec ... ok
[INFO] [stdout] test impls::alloc_tests::recursive_self_types ... ok
[INFO] [stdout] test impls::alloc_tests::recursive_structures ... ok
[INFO] [stdout] test impls::core::tests::roundtrip_manually_drop ... ok
[INFO] [stdout] test impls::core::tests::roundtrip_phantoms ... ok
[INFO] [stdout] test impls::core_tests::archive_as_enum ... ok
[INFO] [stdout] test impls::core_tests::archive_as_self ... ok
[INFO] [stdout] test impls::core::tests::roundtrip_tuple ... ok
[INFO] [stdout] test impls::core_tests::archive_as_generic ... ok
[INFO] [stdout] test impls::core_tests::archive_as_struct ... ok
[INFO] [stdout] test impls::core_tests::basic_mutable_refs ... ok
[INFO] [stdout] test impls::core_tests::archive_as_tuple_struct ... ok
[INFO] [stdout] test impls::core_tests::default_type_parameters ... ok
[INFO] [stdout] test impls::core_tests::archive_as_unit_struct ... ok
[INFO] [stdout] test impls::core_tests::derive_attributes ... ok
[INFO] [stdout] test impls::core_tests::const_generics ... ok
[INFO] [stdout] test impls::core_tests::repr_c_align ... ok
[INFO] [stdout] test impls::core_tests::enum_mutable_ref ... ok
[INFO] [stdout] test impls::core_tests::compare ... ok
[INFO] [stdout] test impls::core_tests::pass_thru_derive_with_option ... ok
[INFO] [stdout] test impls::core_tests::archive_crate_path ... ok
[INFO] [stdout] test impls::core_tests::repr_c_packed ... ok
[INFO] [stdout] test impls::core_tests::roundtrip_enum ... ok
[INFO] [stdout] test impls::core_tests::roundtrip_generic_enum ... ok
[INFO] [stdout] test impls::core_tests::roundtrip_generic_struct ... ok
[INFO] [stdout] test impls::core_tests::roundtrip_struct ... ok
[INFO] [stdout] test impls::core_tests::roundtrip_tuple_struct ... ok
[INFO] [stdout] test impls::core_tests::roundtrip_unit_struct ... ok
[INFO] [stdout] test option::tests::partial_ord_option ... ok
[INFO] [stdout] test tuple::tests::partial_eq ... ok
[INFO] [stdout] test impls::core_tests::struct_mutable_refs ... ok
[INFO] [stdout] test impls::alloc::boxed::tests::roundtrip_option_box ... ok
[INFO] [stdout] test impls::alloc::boxed::tests::roundtrip_option_box_str ... ok
[INFO] [stdout] test impls::alloc::boxed::tests::roundtrip_result_box_str ... ok
[INFO] [stdout] test impls::core::option::tests::roundtrip_option ... ok
[INFO] [stdout] test impls::core_tests::complex_bounds ... ok
[INFO] [stdout] test impls::alloc::boxed::tests::roundtrip_box ... ok
[INFO] [stdout] test impls::alloc::string::tests::roundtrip_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 55 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests nibblecode
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/option.rs - option::ArchivedOption<T>::from (line 181) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - access (line 423) ... ok
[INFO] [stdout] test src/lib.rs - access_unchecked_mut (line 465) ... ok
[INFO] [stdout] test src/lib.rs - to_bytes_in (line 235) ... ok
[INFO] [stdout] test src/lib.rs - access_mut (line 507) ... ok
[INFO] [stdout] test src/lib.rs - to_bytes_in_unchecked (line 173) ... ok
[INFO] [stdout] test src/lib.rs - access_unchecked (line 387) ... ok
[INFO] [stdout] test src/lib.rs - to_bytes (line 295) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.67s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 1.14s; merged doctests compilation took 0.45s
[INFO] running `Command { std: "docker" "inspect" "1643c35739db7cd2eb571c9963d2b24a35e4ccf614f1a23bcb282f61d63f9f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1643c35739db7cd2eb571c9963d2b24a35e4ccf614f1a23bcb282f61d63f9f86", kill_on_drop: false }`
[INFO] [stdout] 1643c35739db7cd2eb571c9963d2b24a35e4ccf614f1a23bcb282f61d63f9f86