[INFO] fetching crate duplicate 1.0.0...
[INFO] checking duplicate-1.0.0 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] extracting crate duplicate 1.0.0 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate duplicate 1.0.0 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate duplicate 1.0.0
[INFO] finished tweaking crates.io crate duplicate 1.0.0
[INFO] tweaked toml for crates.io crate duplicate 1.0.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 44 packages to latest compatible versions
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.76)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rustversion v1.0.17
[INFO] [stderr]   Downloaded duplicate_macrotest v1.0.5
[INFO] [stderr]   Downloaded doc-comment v0.3.3
[INFO] [stderr]   Downloaded heck v0.4.1
[INFO] [stderr]   Downloaded diff v0.1.13
[INFO] [stderr]   Downloaded glob v0.3.1
[INFO] [stderr]   Downloaded toml v0.8.19
[INFO] [stderr]   Downloaded serde_spanned v0.6.7
[INFO] [stderr]   Downloaded aho-corasick v1.1.3
[INFO] [stderr]   Downloaded toml_edit v0.22.20
[INFO] [stderr]   Downloaded toml_datetime v0.6.8
[INFO] [stderr]   Downloaded winnow v0.6.18
[INFO] [stderr]   Downloaded regex v1.10.6
[INFO] [stderr]   Downloaded regex-syntax v0.8.4
[INFO] [stderr]   Downloaded regex-automata v0.4.7
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c54d2a84a1311061ac715b0af931f9e58233435476c139c6cd789a58766b82fd
[INFO] running `Command { std: "docker" "start" "-a" "c54d2a84a1311061ac715b0af931f9e58233435476c139c6cd789a58766b82fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c54d2a84a1311061ac715b0af931f9e58233435476c139c6cd789a58766b82fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c54d2a84a1311061ac715b0af931f9e58233435476c139c6cd789a58766b82fd", kill_on_drop: false }`
[INFO] [stdout] c54d2a84a1311061ac715b0af931f9e58233435476c139c6cd789a58766b82fd
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e73f0d9f63d76738157b93ee001e9cf328c873b92590c6ad2d3ccd1f9d479688
[INFO] running `Command { std: "docker" "start" "-a" "e73f0d9f63d76738157b93ee001e9cf328c873b92590c6ad2d3ccd1f9d479688", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking equivalent v1.0.1
[INFO] [stderr]     Checking hashbrown v0.14.5
[INFO] [stderr]     Checking winnow v0.6.18
[INFO] [stderr]    Compiling serde_json v1.0.127
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking itoa v1.0.11
[INFO] [stderr]    Compiling rustversion v1.0.17
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking heck v0.4.1
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking indexmap v2.4.0
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]    Compiling syn v2.0.76
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking duplicate v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `std::result::Result::<T, E>::map_or` that must be used
[INFO] [stdout]   --> src/module_disambiguation.rs:62:3
[INFO] [stdout]    |
[INFO] [stdout] 62 | /         item_iter
[INFO] [stdout] 63 | |             .extract_simple(|t| is_ident(t, Some("mod")), |t| t, None)
[INFO] [stdout] 64 | |             .map_or((), |mod_keyword| {
[INFO] [stdout] 65 | |                 result.extend(Some(mod_keyword).into_iter());
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |                 result.extend(Some(TokenTree::Ident(replacement)).into_iter());
[INFO] [stdout] 80 | |             });
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the returned value, use `if let` instead
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let _ = item_iter
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Option::<T>::map_or` that must be used
[INFO] [stdout]    --> src/token_iter.rs:456:3
[INFO] [stdout]     |
[INFO] [stdout] 456 |         new_front.map_or((), |t| self.unconsumed.push_front(t));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the returned value, use `if let` instead
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 456 |         let _ = new_front.map_or((), |t| self.unconsumed.push_front(t));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::result::Result::<T, E>::map_or` that must be used
[INFO] [stdout]   --> src/module_disambiguation.rs:62:3
[INFO] [stdout]    |
[INFO] [stdout] 62 | /         item_iter
[INFO] [stdout] 63 | |             .extract_simple(|t| is_ident(t, Some("mod")), |t| t, None)
[INFO] [stdout] 64 | |             .map_or((), |mod_keyword| {
[INFO] [stdout] 65 | |                 result.extend(Some(mod_keyword).into_iter());
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |                 result.extend(Some(TokenTree::Ident(replacement)).into_iter());
[INFO] [stdout] 80 | |             });
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the returned value, use `if let` instead
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let _ = item_iter
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Option::<T>::map_or` that must be used
[INFO] [stdout]    --> src/token_iter.rs:456:3
[INFO] [stdout]     |
[INFO] [stdout] 456 |         new_front.map_or((), |t| self.unconsumed.push_front(t));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the returned value, use `if let` instead
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 456 |         let _ = new_front.map_or((), |t| self.unconsumed.push_front(t));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking toml_datetime v0.6.8
[INFO] [stderr]     Checking serde_spanned v0.6.7
[INFO] [stderr]     Checking toml_edit v0.22.20
[INFO] [stderr]     Checking toml v0.8.19
[INFO] [stderr]     Checking duplicate_macrotest v1.0.5
[INFO] [stdout] warning: unused return value of `std::result::Result::<T, E>::map_or` that must be used
[INFO] [stdout]   --> src/module_disambiguation.rs:62:3
[INFO] [stdout]    |
[INFO] [stdout] 62 | /         item_iter
[INFO] [stdout] 63 | |             .extract_simple(|t| is_ident(t, Some("mod")), |t| t, None)
[INFO] [stdout] 64 | |             .map_or((), |mod_keyword| {
[INFO] [stdout] 65 | |                 result.extend(Some(mod_keyword).into_iter());
[INFO] [stdout] ...  |
[INFO] [stdout] 79 | |                 result.extend(Some(TokenTree::Ident(replacement)).into_iter());
[INFO] [stdout] 80 | |             });
[INFO] [stdout]    | |______________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the returned value, use `if let` instead
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 62 |         let _ = item_iter
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Option::<T>::map_or` that must be used
[INFO] [stdout]    --> src/token_iter.rs:456:3
[INFO] [stdout]     |
[INFO] [stdout] 456 |         new_front.map_or((), |t| self.unconsumed.push_front(t));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the returned value, use `if let` instead
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 456 |         let _ = new_front.map_or((), |t| self.unconsumed.push_front(t));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.63s
[INFO] running `Command { std: "docker" "inspect" "e73f0d9f63d76738157b93ee001e9cf328c873b92590c6ad2d3ccd1f9d479688", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73f0d9f63d76738157b93ee001e9cf328c873b92590c6ad2d3ccd1f9d479688", kill_on_drop: false }`
[INFO] [stdout] e73f0d9f63d76738157b93ee001e9cf328c873b92590c6ad2d3ccd1f9d479688