[INFO] fetching crate flamme-rouge 0.1.0...
[INFO] checking flamme-rouge-0.1.0 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate flamme-rouge 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate flamme-rouge 0.1.0 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate flamme-rouge 0.1.0
[INFO] finished tweaking crates.io crate flamme-rouge 0.1.0
[INFO] tweaked toml for crates.io crate flamme-rouge 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1bc29b013de37c556f907bde16e2b47e47cd3a37ef661493cfc7182e23fb208a
[INFO] running `Command { std: "docker" "start" "-a" "1bc29b013de37c556f907bde16e2b47e47cd3a37ef661493cfc7182e23fb208a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1bc29b013de37c556f907bde16e2b47e47cd3a37ef661493cfc7182e23fb208a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bc29b013de37c556f907bde16e2b47e47cd3a37ef661493cfc7182e23fb208a", kill_on_drop: false }`
[INFO] [stdout] 1bc29b013de37c556f907bde16e2b47e47cd3a37ef661493cfc7182e23fb208a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ab614ea25339bf5e3624fccfcb84788f527213bbb8731806f95d8d271c559b5
[INFO] running `Command { std: "docker" "start" "-a" "9ab614ea25339bf5e3624fccfcb84788f527213bbb8731806f95d8d271c559b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking object v0.26.2
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]     Checking addr2line v0.16.0
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking card_deck v0.1.9
[INFO] [stderr]     Checking flamme-rouge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/core.rs:16:22
[INFO] [stdout]    |
[INFO] [stdout] 16 |     ss: &mut Vec<Box<Strategy>>,
[INFO] [stdout]    |                      ^^^^^^^^ help: use `dyn`: `dyn Strategy`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/core.rs:16:22
[INFO] [stdout]    |
[INFO] [stdout] 16 |     ss: &mut Vec<Box<Strategy>>,
[INFO] [stdout]    |                      ^^^^^^^^ help: use `dyn`: `dyn Strategy`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/core.rs:16:22
[INFO] [stdout]    |
[INFO] [stdout] 16 |     ss: &mut Vec<Box<Strategy>>,
[INFO] [stdout]    |                      ^^^^^^^^ help: use `dyn`: `dyn Strategy`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/core.rs:16:22
[INFO] [stdout]    |
[INFO] [stdout] 16 |     ss: &mut Vec<Box<Strategy>>,
[INFO] [stdout]    |                      ^^^^^^^^ help: use `dyn`: `dyn Strategy`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `scores` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:41:24
[INFO] [stdout]    |
[INFO] [stdout] 40 |         match scores.get(&winner) {
[INFO] [stdout]    |               ------ immutable borrow occurs here
[INFO] [stdout] 41 |             Some(n) => scores.insert(winner, n + 1),
[INFO] [stdout]    |                        ^^^^^^                - immutable borrow later used here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `scores` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/main.rs:41:24
[INFO] [stdout]    |
[INFO] [stdout] 40 |         match scores.get(&winner) {
[INFO] [stdout]    |               ------ immutable borrow occurs here
[INFO] [stdout] 41 |             Some(n) => scores.insert(winner, n + 1),
[INFO] [stdout]    |                        ^^^^^^                - immutable borrow later used here
[INFO] [stdout]    |                        |
[INFO] [stdout]    |                        mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.06s
[INFO] running `Command { std: "docker" "inspect" "9ab614ea25339bf5e3624fccfcb84788f527213bbb8731806f95d8d271c559b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ab614ea25339bf5e3624fccfcb84788f527213bbb8731806f95d8d271c559b5", kill_on_drop: false }`
[INFO] [stdout] 9ab614ea25339bf5e3624fccfcb84788f527213bbb8731806f95d8d271c559b5