[INFO] fetching crate muta-protocol 0.1.0-alpha.1...
[INFO] checking muta-protocol-0.1.0-alpha.1 against try#b946edaa85de45f124065f52b1bc55ba2fb4f9fb for pr-157562
[INFO] extracting crate muta-protocol 0.1.0-alpha.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate muta-protocol 0.1.0-alpha.1
[INFO] finished tweaking crates.io crate muta-protocol 0.1.0-alpha.1
[INFO] tweaked toml for crates.io crate muta-protocol 0.1.0-alpha.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate muta-protocol 0.1.0-alpha.1 on toolchain b946edaa85de45f124065f52b1bc55ba2fb4f9fb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "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" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[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@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] da1759bfa89a105ccbd53aa2055c30cda505c04c4e300e3f4bed62a24eda4200
[INFO] running `Command { std: "docker" "start" "da1759bfa89a105ccbd53aa2055c30cda505c04c4e300e3f4bed62a24eda4200", 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" "da1759bfa89a105ccbd53aa2055c30cda505c04c4e300e3f4bed62a24eda4200" "/opt/rustwide/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da1759bfa89a105ccbd53aa2055c30cda505c04c4e300e3f4bed62a24eda4200", 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" "da1759bfa89a105ccbd53aa2055c30cda505c04c4e300e3f4bed62a24eda4200" "/opt/rustwide/cargo-home/bin/cargo" "+b946edaa85de45f124065f52b1bc55ba2fb4f9fb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused imports: `field` and `impl_default_bytes_codec_for`
[INFO] [stdout]   --> src/codec/epoch.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     field, impl_default_bytes_codec_for,
[INFO] [stdout]    |     ^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `field` and `impl_default_bytes_codec_for`
[INFO] [stdout]   --> src/codec/primitive.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     field, impl_default_bytes_codec_for,
[INFO] [stdout]    |     ^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `field` and `impl_default_bytes_codec_for`
[INFO] [stdout]  --> src/codec/receipt.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     field, impl_default_bytes_codec_for,
[INFO] [stdout]   |     ^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `field` and `impl_default_bytes_codec_for`
[INFO] [stdout]  --> src/codec/transaction.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     field, impl_default_bytes_codec_for,
[INFO] [stdout]   |     ^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `impl_default_fixed_codec_for`
[INFO] [stdout]  --> src/fixed_codec/epoch.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::{impl_default_fixed_codec_for, ProtocolResult};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `impl_default_fixed_codec_for`
[INFO] [stdout]  --> src/fixed_codec/primitive.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::{impl_default_fixed_codec_for, ProtocolResult};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `impl_default_fixed_codec_for`
[INFO] [stdout]  --> src/fixed_codec/receipt.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{impl_default_fixed_codec_for, ProtocolResult};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `impl_default_fixed_codec_for`
[INFO] [stdout]  --> src/fixed_codec/transaction.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{impl_default_fixed_codec_for, ProtocolResult};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `field` and `impl_default_bytes_codec_for`
[INFO] [stdout]   --> src/codec/epoch.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     field, impl_default_bytes_codec_for,
[INFO] [stdout]    |     ^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `field` and `impl_default_bytes_codec_for`
[INFO] [stdout]   --> src/codec/primitive.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     field, impl_default_bytes_codec_for,
[INFO] [stdout]    |     ^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `field` and `impl_default_bytes_codec_for`
[INFO] [stdout]  --> src/codec/receipt.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     field, impl_default_bytes_codec_for,
[INFO] [stdout]   |     ^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `field` and `impl_default_bytes_codec_for`
[INFO] [stdout]  --> src/codec/transaction.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     field, impl_default_bytes_codec_for,
[INFO] [stdout]   |     ^^^^^  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `impl_default_fixed_codec_for`
[INFO] [stdout]  --> src/fixed_codec/epoch.rs:7:13
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::{impl_default_fixed_codec_for, ProtocolResult};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `impl_default_fixed_codec_for`
[INFO] [stdout]  --> src/fixed_codec/primitive.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::{impl_default_fixed_codec_for, ProtocolResult};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `impl_default_fixed_codec_for`
[INFO] [stdout]  --> src/fixed_codec/receipt.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::{impl_default_fixed_codec_for, ProtocolResult};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `impl_default_fixed_codec_for`
[INFO] [stdout]  --> src/fixed_codec/transaction.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::{impl_default_fixed_codec_for, ProtocolResult};
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/traits/binding.rs:232:55
[INFO] [stdout]     |
[INFO] [stdout] 232 |     fn iter<'a>(&'a self) -> Box<dyn Iterator<Item = (&Key, Value)> + 'a>;
[INFO] [stdout]     |                  -- the lifetime is named here        ^^^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 232 |     fn iter<'a>(&'a self) -> Box<dyn Iterator<Item = (&'a Key, Value)> + 'a>;
[INFO] [stdout]     |                                                        ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/traits/binding.rs:232:55
[INFO] [stdout]     |
[INFO] [stdout] 232 |     fn iter<'a>(&'a self) -> Box<dyn Iterator<Item = (&Key, Value)> + 'a>;
[INFO] [stdout]     |                  -- the lifetime is named here        ^^^^ the same lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'a`
[INFO] [stdout]     |
[INFO] [stdout] 232 |     fn iter<'a>(&'a self) -> Box<dyn Iterator<Item = (&'a Key, Value)> + 'a>;
[INFO] [stdout]     |                                                        ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `test` is declared but not used
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 34.08s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: uint v0.4.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 7`
[INFO] running `Command { std: "docker" "inspect" "da1759bfa89a105ccbd53aa2055c30cda505c04c4e300e3f4bed62a24eda4200", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da1759bfa89a105ccbd53aa2055c30cda505c04c4e300e3f4bed62a24eda4200", kill_on_drop: false }`
[INFO] [stdout] da1759bfa89a105ccbd53aa2055c30cda505c04c4e300e3f4bed62a24eda4200
