[INFO] fetching crate from_remote_derive 0.2.2...
[INFO] checking from_remote_derive-0.2.2 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate from_remote_derive 0.2.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate from_remote_derive 0.2.2
[INFO] finished tweaking crates.io crate from_remote_derive 0.2.2
[INFO] tweaked toml for crates.io crate from_remote_derive 0.2.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate from_remote_derive 0.2.2 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate from_remote_derive 0.2.2 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "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-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 355fa6e3bfc58cb2922cc3cc97b9de6592f3367d70017ef3344deb96b241022b
[INFO] running `Command { std: "docker" "start" "355fa6e3bfc58cb2922cc3cc97b9de6592f3367d70017ef3344deb96b241022b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "355fa6e3bfc58cb2922cc3cc97b9de6592f3367d70017ef3344deb96b241022b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "355fa6e3bfc58cb2922cc3cc97b9de6592f3367d70017ef3344deb96b241022b" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "355fa6e3bfc58cb2922cc3cc97b9de6592f3367d70017ef3344deb96b241022b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "355fa6e3bfc58cb2922cc3cc97b9de6592f3367d70017ef3344deb96b241022b" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking from_remote_derive v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Foo` is never constructed
[INFO] [stdout]  --> examples/main.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 | struct Foo {
[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 `Bar` is never constructed
[INFO] [stdout]   --> examples/main.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Bar {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Pook` is never constructed
[INFO] [stdout]   --> examples/main.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Pook {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Fizz` is never used
[INFO] [stdout]   --> examples/main.rs:24:6
[INFO] [stdout]    |
[INFO] [stdout] 24 | enum Fizz {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Buzz` is never used
[INFO] [stdout]   --> examples/main.rs:34:6
[INFO] [stdout]    |
[INFO] [stdout] 34 | enum Buzz {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u64`
[INFO] [stdout]  --> examples/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     bar: BTreeMap<u64, u64>,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]   = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]   |
[INFO] [stdout] 8 |     <u64 as Into<_>>::into(bar): BTreeMap<u64, u64>,
[INFO] [stdout]   |     +++++++++++++++++++++++   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u64`
[INFO] [stdout]   --> examples/main.rs:25:7
[INFO] [stdout]    |
[INFO] [stdout] 25 |     A(u64, Option<u64>),
[INFO] [stdout]    |       ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 25 |     A(<u64 as Into<_>>::into(u64), Option<u64>),
[INFO] [stdout]    |       +++++++++++++++++++++++   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u64`
[INFO] [stdout]   --> examples/main.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     A(u64, Option<u64>),
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `String`
[INFO] [stdout]   --> examples/main.rs:26:7
[INFO] [stdout]    |
[INFO] [stdout] 26 |     B(HashMap<String, Foo>),
[INFO] [stdout]    |       ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 26 |     B(<String as Into<_>>::into(HashMap)<String, Foo>),
[INFO] [stdout]    |       ++++++++++++++++++++++++++       +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u16`
[INFO] [stdout]   --> examples/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |         x: u16,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 29 |         <u16 as Into<_>>::into(x): u16,
[INFO] [stdout]    |         +++++++++++++++++++++++ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `u32`
[INFO] [stdout]   --> examples/main.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         y: u32,
[INFO] [stdout]    |         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]    |
[INFO] [stdout] 30 |         <u32 as Into<_>>::into(y): u32,
[INFO] [stdout]    |         +++++++++++++++++++++++ +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `from_remote_derive` (example "main") due to 6 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "355fa6e3bfc58cb2922cc3cc97b9de6592f3367d70017ef3344deb96b241022b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "355fa6e3bfc58cb2922cc3cc97b9de6592f3367d70017ef3344deb96b241022b", kill_on_drop: false }`
[INFO] [stdout] 355fa6e3bfc58cb2922cc3cc97b9de6592f3367d70017ef3344deb96b241022b
