[INFO] fetching crate ultra_tournament 0.1.0...
[INFO] building ultra_tournament-0.1.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate ultra_tournament 0.1.0 into /workspace/builds/worker-6-tc2/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-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ultra_tournament 0.1.0 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]     Updating crates.io index
[INFO] [stderr]      Locking 98 packages to latest compatible versions
[INFO] [stderr]       Adding colored v2.2.0 (available: v3.0.0)
[INFO] [stderr]       Adding enum-map v0.6.6 (available: v2.7.3)
[INFO] [stderr]       Adding enum-map-derive v0.4.6 (available: v0.17.0)
[INFO] [stderr]       Adding petgraph v0.4.13 (available: v0.8.2)
[INFO] [stderr]       Adding ptree v0.2.1 (available: v0.5.2)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 03b3cb884cdc2ba85c6cb560248f05aeb9091516ed940118bb2b450cc51ded39
[INFO] running `Command { std: "docker" "start" "-a" "03b3cb884cdc2ba85c6cb560248f05aeb9091516ed940118bb2b450cc51ded39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "03b3cb884cdc2ba85c6cb560248f05aeb9091516ed940118bb2b450cc51ded39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03b3cb884cdc2ba85c6cb560248f05aeb9091516ed940118bb2b450cc51ded39", kill_on_drop: false }`
[INFO] [stdout] 03b3cb884cdc2ba85c6cb560248f05aeb9091516ed940118bb2b450cc51ded39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 49585ce1740f84d186dd547b550732dd796586d7f34c71d31e3a3277f8986f9b
[INFO] running `Command { std: "docker" "start" "-a" "49585ce1740f84d186dd547b550732dd796586d7f34c71d31e3a3277f8986f9b", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling rayon-core v1.13.0
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling hashbrown v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling linked-hash-map v0.5.6
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling ordered-float v1.1.1
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling mopa v0.2.2
[INFO] [stderr]    Compiling tint v1.0.1
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling directories v1.0.2
[INFO] [stderr]    Compiling shrev v1.1.3
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling array-macro v1.0.5
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling tuple_utils v0.3.0
[INFO] [stderr]    Compiling crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling aho-corasick v1.1.3
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling colored v2.2.0
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling serde_test v0.8.23
[INFO] [stderr]    Compiling regex-automata v0.4.11
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling enum-map-derive v0.4.6
[INFO] [stderr]    Compiling tynm v0.1.10
[INFO] [stderr]    Compiling enum-map v0.6.6
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling shred v0.10.2
[INFO] [stderr]    Compiling hibitset v0.6.4
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling serde-value v0.5.3
[INFO] [stderr]    Compiling regex v1.11.3
[INFO] [stderr]    Compiling serde-hjson v0.8.2
[INFO] [stderr]    Compiling specs v0.16.1
[INFO] [stderr]    Compiling config v0.9.3
[INFO] [stderr]    Compiling ptree v0.2.1
[INFO] [stderr]    Compiling 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.27s
[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 2`
[INFO] running `Command { std: "docker" "inspect" "49585ce1740f84d186dd547b550732dd796586d7f34c71d31e3a3277f8986f9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49585ce1740f84d186dd547b550732dd796586d7f34c71d31e3a3277f8986f9b", kill_on_drop: false }`
[INFO] [stdout] 49585ce1740f84d186dd547b550732dd796586d7f34c71d31e3a3277f8986f9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 054e970f9ab891f96eb12c8ae7226c414709750eec39f923a0975b639918d88f
[INFO] running `Command { std: "docker" "start" "-a" "054e970f9ab891f96eb12c8ae7226c414709750eec39f923a0975b639918d88f", kill_on_drop: false }`
[INFO] [stderr]    Compiling arrayvec v0.7.6
[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]    Compiling num-format v0.4.4
[INFO] [stderr]    Compiling ultra_tournament v0.1.0 (/opt/rustwide/workdir)
[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: 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: 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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.54s
[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 2`
[INFO] running `Command { std: "docker" "inspect" "054e970f9ab891f96eb12c8ae7226c414709750eec39f923a0975b639918d88f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "054e970f9ab891f96eb12c8ae7226c414709750eec39f923a0975b639918d88f", kill_on_drop: false }`
[INFO] [stdout] 054e970f9ab891f96eb12c8ae7226c414709750eec39f923a0975b639918d88f
