[INFO] fetching crate ultra_tournament 0.1.0...
[INFO] checking ultra_tournament-0.1.0 against master#4eb62535fc12dd1a63fd43a4173e224e79313c4d for pr-158816
[INFO] extracting crate ultra_tournament 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate ultra_tournament 0.1.0
[INFO] finished tweaking crates.io crate ultra_tournament 0.1.0
[INFO] tweaked toml for crates.io crate ultra_tournament 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate ultra_tournament 0.1.0 on toolchain 4eb62535fc12dd1a63fd43a4173e224e79313c4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "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" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 98 packages to latest compatible versions
[INFO] [stderr]       Adding colored v2.2.0 (available: v3.1.1)
[INFO] [stderr]       Adding enum-map v0.6.6 (available: v2.7.3)
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[INFO] [stderr]       Adding ptree v0.2.1 (available: v0.5.2)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.10.2)
[INFO] [stderr]       Adding specs v0.16.1 (available: v0.20.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tuple_utils v0.3.0
[INFO] [stderr]   Downloaded shred v0.10.2
[INFO] [stderr]   Downloaded isatty v0.1.9
[INFO] [stderr]   Downloaded enum-map-derive v0.4.6
[INFO] [stderr]   Downloaded enum-map v0.6.6
[INFO] [stderr]   Downloaded tynm v0.1.10
[INFO] [stderr]   Downloaded hashbrown v0.7.2
[INFO] [stderr]   Downloaded hibitset v0.6.4
[INFO] [stderr]   Downloaded serde-hjson v0.8.2
[INFO] [stderr]   Downloaded ahash v0.3.8
[INFO] [stderr]   Downloaded config v0.9.3
[INFO] [stderr]   Downloaded ptree v0.2.1
[INFO] [stderr]   Downloaded specs v0.16.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 17a059a3a42ffb12f4dae223658baed322be4542b8b69226003531ff67793874
[INFO] running `Command { std: "docker" "start" "17a059a3a42ffb12f4dae223658baed322be4542b8b69226003531ff67793874", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17a059a3a42ffb12f4dae223658baed322be4542b8b69226003531ff67793874", 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" "17a059a3a42ffb12f4dae223658baed322be4542b8b69226003531ff67793874" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "17a059a3a42ffb12f4dae223658baed322be4542b8b69226003531ff67793874", 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" "17a059a3a42ffb12f4dae223658baed322be4542b8b69226003531ff67793874" "/opt/rustwide/cargo-home/bin/cargo" "+4eb62535fc12dd1a63fd43a4173e224e79313c4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking serde v0.8.23
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[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]     Checking minimal-lexical v0.2.1
[INFO] [stderr]    Compiling syn v1.0.109
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[INFO] [stderr]     Checking linked-hash-map v0.3.0
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[INFO] [stderr]     Checking config v0.9.3
[INFO] [stderr]     Checking ptree v0.2.1
[INFO] [stderr]     Checking ultra_tournament v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/tournament.rs:457:14
[INFO] [stdout]     |
[INFO] [stdout] 457 |     fn children(&self) -> Cow<[Self::Child]> {
[INFO] [stdout]     |                 ^^^^^     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the 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: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 457 |     fn children(&self) -> Cow<'_, [Self::Child]> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyMetadata` is never constructed
[INFO] [stdout]  --> src/test/test_docs.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct MyMetadata;
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/test/test_docs.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl MyMetadata {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 7 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `U32BattleSystem` is never constructed
[INFO] [stdout]   --> src/test/test_docs.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | struct U32BattleSystem;
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/tournament.rs:457:14
[INFO] [stdout]     |
[INFO] [stdout] 457 |     fn children(&self) -> Cow<[Self::Child]> {
[INFO] [stdout]     |                 ^^^^^     ^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the 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: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 457 |     fn children(&self) -> Cow<'_, [Self::Child]> {
[INFO] [stdout]     |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.11s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 6`
[INFO] running `Command { std: "docker" "inspect" "17a059a3a42ffb12f4dae223658baed322be4542b8b69226003531ff67793874", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17a059a3a42ffb12f4dae223658baed322be4542b8b69226003531ff67793874", kill_on_drop: false }`
[INFO] [stdout] 17a059a3a42ffb12f4dae223658baed322be4542b8b69226003531ff67793874
