[INFO] fetching crate wacky_traits 2.0.0...
[INFO] testing wacky_traits-2.0.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate wacky_traits 2.0.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate wacky_traits 2.0.0
[INFO] finished tweaking crates.io crate wacky_traits 2.0.0
[INFO] tweaked toml for crates.io crate wacky_traits 2.0.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wacky_traits 2.0.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e9d8dec64f53e56b3a803b0bd4f7d673e6843c4db90ecd21dd55eda42efa8ee
[INFO] running `Command { std: "docker" "start" "-a" "6e9d8dec64f53e56b3a803b0bd4f7d673e6843c4db90ecd21dd55eda42efa8ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e9d8dec64f53e56b3a803b0bd4f7d673e6843c4db90ecd21dd55eda42efa8ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e9d8dec64f53e56b3a803b0bd4f7d673e6843c4db90ecd21dd55eda42efa8ee", kill_on_drop: false }`
[INFO] [stdout] 6e9d8dec64f53e56b3a803b0bd4f7d673e6843c4db90ecd21dd55eda42efa8ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9b57f1242156f1dda030d5d82f7fdd80acc63cefec6c5d39661cc4d82e99a76
[INFO] running `Command { std: "docker" "start" "-a" "b9b57f1242156f1dda030d5d82f7fdd80acc63cefec6c5d39661cc4d82e99a76", kill_on_drop: false }`
[INFO] [stderr]    Compiling wacky_traits v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Collector` is never used
[INFO] [stdout]  --> src/in_out/collector.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Collector<Input,Next>:Mapper<Input>{
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Collectable` is never used
[INFO] [stdout]   --> src/in_out/collector.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Collectable<TCollector> {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FnCollector` is never constructed
[INFO] [stdout]  --> src/in_out/collectors.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct FnCollector<TFn>(pub TFn);
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FnMutCollector` is never constructed
[INFO] [stdout]   --> src/in_out/collectors.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct FnMutCollector<TFn>(pub TFn);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MapperCollector` is never constructed
[INFO] [stdout]   --> src/in_out/collectors.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub struct MapperCollector<TMapper,TCollector>(pub TMapper,pub TCollector);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mapper` is never used
[INFO] [stdout]  --> src/in_out/mapper.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait Mapper<Input>{
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsSelf` is never constructed
[INFO] [stdout]  --> src/in_out/mappers.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AsSelf;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MapperMapper` is never constructed
[INFO] [stdout]   --> src/in_out/mappers.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct MapperMapper<TMapperA,TMapperB>(pub TMapperA,pub TMapperB);
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "b9b57f1242156f1dda030d5d82f7fdd80acc63cefec6c5d39661cc4d82e99a76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9b57f1242156f1dda030d5d82f7fdd80acc63cefec6c5d39661cc4d82e99a76", kill_on_drop: false }`
[INFO] [stdout] b9b57f1242156f1dda030d5d82f7fdd80acc63cefec6c5d39661cc4d82e99a76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59c56875af9a2b2f790458e7ebdcaa7b989f5b13ee9011b76095e574414bca10
[INFO] running `Command { std: "docker" "start" "-a" "59c56875af9a2b2f790458e7ebdcaa7b989f5b13ee9011b76095e574414bca10", kill_on_drop: false }`
[INFO] [stdout] warning: trait `Collector` is never used
[INFO] [stdout]  --> src/in_out/collector.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Collector<Input,Next>:Mapper<Input>{
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Collectable` is never used
[INFO] [stdout]   --> src/in_out/collector.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Collectable<TCollector> {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FnCollector` is never constructed
[INFO] [stdout]  --> src/in_out/collectors.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct FnCollector<TFn>(pub TFn);
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling wacky_traits v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `FnMutCollector` is never constructed
[INFO] [stdout]   --> src/in_out/collectors.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct FnMutCollector<TFn>(pub TFn);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MapperCollector` is never constructed
[INFO] [stdout]   --> src/in_out/collectors.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub struct MapperCollector<TMapper,TCollector>(pub TMapper,pub TCollector);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mapper` is never used
[INFO] [stdout]  --> src/in_out/mapper.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait Mapper<Input>{
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsSelf` is never constructed
[INFO] [stdout]  --> src/in_out/mappers.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AsSelf;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MapperMapper` is never constructed
[INFO] [stdout]   --> src/in_out/mappers.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct MapperMapper<TMapperA,TMapperB>(pub TMapperA,pub TMapperB);
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Collector` is never used
[INFO] [stdout]  --> src/in_out/collector.rs:5:11
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Collector<Input,Next>:Mapper<Input>{
[INFO] [stdout]   |           ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Collectable` is never used
[INFO] [stdout]   --> src/in_out/collector.rs:13:11
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub trait Collectable<TCollector> {
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FnCollector` is never constructed
[INFO] [stdout]  --> src/in_out/collectors.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct FnCollector<TFn>(pub TFn);
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FnMutCollector` is never constructed
[INFO] [stdout]   --> src/in_out/collectors.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub struct FnMutCollector<TFn>(pub TFn);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MapperCollector` is never constructed
[INFO] [stdout]   --> src/in_out/collectors.rs:67:12
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub struct MapperCollector<TMapper,TCollector>(pub TMapper,pub TCollector);
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mapper` is never used
[INFO] [stdout]  --> src/in_out/mapper.rs:8:11
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub trait Mapper<Input>{
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `AsSelf` is never constructed
[INFO] [stdout]  --> src/in_out/mappers.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct AsSelf;
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MapperMapper` is never constructed
[INFO] [stdout]   --> src/in_out/mappers.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct MapperMapper<TMapperA,TMapperB>(pub TMapperA,pub TMapperB);
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "59c56875af9a2b2f790458e7ebdcaa7b989f5b13ee9011b76095e574414bca10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59c56875af9a2b2f790458e7ebdcaa7b989f5b13ee9011b76095e574414bca10", kill_on_drop: false }`
[INFO] [stdout] 59c56875af9a2b2f790458e7ebdcaa7b989f5b13ee9011b76095e574414bca10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 78d309dc1cd80b103fb0223e25d7230542520e7ea9eda451d8aec5f99e30957d
[INFO] running `Command { std: "docker" "start" "-a" "78d309dc1cd80b103fb0223e25d7230542520e7ea9eda451d8aec5f99e30957d", kill_on_drop: false }`
[INFO] [stderr] warning: trait `Collector` is never used
[INFO] [stderr]  --> src/in_out/collector.rs:5:11
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub trait Collector<Input,Next>:Mapper<Input>{
[INFO] [stderr]   |           ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Collectable` is never used
[INFO] [stderr]   --> src/in_out/collector.rs:13:11
[INFO] [stderr]    |
[INFO] [stderr] 13 | pub trait Collectable<TCollector> {
[INFO] [stderr]    |           ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `FnCollector` is never constructed
[INFO] [stderr]  --> src/in_out/collectors.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct FnCollector<TFn>(pub TFn);
[INFO] [stderr]   |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `FnMutCollector` is never constructed
[INFO] [stderr]   --> src/in_out/collectors.rs:27:12
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct FnMutCollector<TFn>(pub TFn);
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MapperCollector` is never constructed
[INFO] [stderr]   --> src/in_out/collectors.rs:67:12
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub struct MapperCollector<TMapper,TCollector>(pub TMapper,pub TCollector);
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Mapper` is never used
[INFO] [stderr]  --> src/in_out/mapper.rs:8:11
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub trait Mapper<Input>{
[INFO] [stderr]   |           ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `AsSelf` is never constructed
[INFO] [stderr]  --> src/in_out/mappers.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct AsSelf;
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `MapperMapper` is never constructed
[INFO] [stderr]   --> src/in_out/mappers.rs:11:12
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub struct MapperMapper<TMapperA,TMapperB>(pub TMapperA,pub TMapperB);
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `wacky_traits` (lib) generated 8 warnings
[INFO] [stderr] warning: `wacky_traits` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/wacky_traits-bfb419f0115558d7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests wacky_traits
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "78d309dc1cd80b103fb0223e25d7230542520e7ea9eda451d8aec5f99e30957d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78d309dc1cd80b103fb0223e25d7230542520e7ea9eda451d8aec5f99e30957d", kill_on_drop: false }`
[INFO] [stdout] 78d309dc1cd80b103fb0223e25d7230542520e7ea9eda451d8aec5f99e30957d