[INFO] fetching crate wacky_traits 2.0.0...
[INFO] building wacky_traits-2.0.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate wacky_traits 2.0.0 into /workspace/builds/worker-0-tc2/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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wacky_traits 2.0.0 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "generate-lockfile" "--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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7fa2c068a21285ffa8ec94b0bd2422c35f21bc8bda515f88a9d9a4b1788b67bd
[INFO] running `Command { std: "docker" "start" "-a" "7fa2c068a21285ffa8ec94b0bd2422c35f21bc8bda515f88a9d9a4b1788b67bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fa2c068a21285ffa8ec94b0bd2422c35f21bc8bda515f88a9d9a4b1788b67bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fa2c068a21285ffa8ec94b0bd2422c35f21bc8bda515f88a9d9a4b1788b67bd", kill_on_drop: false }`
[INFO] [stdout] 7fa2c068a21285ffa8ec94b0bd2422c35f21bc8bda515f88a9d9a4b1788b67bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fa8bcfa6959a5fad6f39d8503fa262c1fa06e9a592f84e2a3ed533e819636ed
[INFO] running `Command { std: "docker" "start" "-a" "3fa8bcfa6959a5fad6f39d8503fa262c1fa06e9a592f84e2a3ed533e819636ed", 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)]` (part of `#[warn(unused)]`) on by default
[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: 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 `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: 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "3fa8bcfa6959a5fad6f39d8503fa262c1fa06e9a592f84e2a3ed533e819636ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fa8bcfa6959a5fad6f39d8503fa262c1fa06e9a592f84e2a3ed533e819636ed", kill_on_drop: false }`
[INFO] [stdout] 3fa8bcfa6959a5fad6f39d8503fa262c1fa06e9a592f84e2a3ed533e819636ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4cb68d4874935cc768c9c25d1a43008b476fcfbfaa48d14b28120e6ddf2beaaf
[INFO] running `Command { std: "docker" "start" "-a" "4cb68d4874935cc768c9c25d1a43008b476fcfbfaa48d14b28120e6ddf2beaaf", 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)]` (part of `#[warn(unused)]`) on by default
[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: 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 `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] [stderr]    Compiling wacky_traits v2.0.0 (/opt/rustwide/workdir)
[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: 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)]` (part of `#[warn(unused)]`) on by default
[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 `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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "4cb68d4874935cc768c9c25d1a43008b476fcfbfaa48d14b28120e6ddf2beaaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cb68d4874935cc768c9c25d1a43008b476fcfbfaa48d14b28120e6ddf2beaaf", kill_on_drop: false }`
[INFO] [stdout] 4cb68d4874935cc768c9c25d1a43008b476fcfbfaa48d14b28120e6ddf2beaaf