[INFO] cloning repository https://github.com/masonium/card-engine
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/masonium/card-engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasonium%2Fcard-engine", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasonium%2Fcard-engine'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 85ab7c08645b3af30ae23034d77de6f13b1e4e3c
[INFO] building masonium/card-engine against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmasonium%2Fcard-engine" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/masonium/card-engine on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/masonium/card-engine
[INFO] finished tweaking git repo https://github.com/masonium/card-engine
[INFO] tweaked toml for git repo https://github.com/masonium/card-engine written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/masonium/card-engine already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-complex v0.1.37
[INFO] [stderr]   Downloaded matrixmultiply v0.1.13
[INFO] [stderr]   Downloaded ndarray v0.9.1
[INFO] [stderr]   Downloaded ndarray-rand v0.5.0
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 458be3b49e76eb55bbe1656d303fb7e34424520093f769f78875512c98f0d73d
[INFO] running `Command { std: "docker" "start" "-a" "458be3b49e76eb55bbe1656d303fb7e34424520093f769f78875512c98f0d73d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "458be3b49e76eb55bbe1656d303fb7e34424520093f769f78875512c98f0d73d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "458be3b49e76eb55bbe1656d303fb7e34424520093f769f78875512c98f0d73d", kill_on_drop: false }`
[INFO] [stdout] 458be3b49e76eb55bbe1656d303fb7e34424520093f769f78875512c98f0d73d
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c0ba48e7e49d180bc037586f60b07e5bfe25e441fd2732fa715bf0ce1311ac32
[INFO] running `Command { std: "docker" "start" "-a" "c0ba48e7e49d180bc037586f60b07e5bfe25e441fd2732fa715bf0ce1311ac32", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling matrixmultiply v0.1.13
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling either v1.1.0
[INFO] [stderr]    Compiling ndarray v0.9.1
[INFO] [stderr]    Compiling num-traits v0.1.37
[INFO] [stderr]    Compiling bitflags v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling unicode-segmentation v1.2.0
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling itertools v0.6.0
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling time v0.1.37
[INFO] [stderr]    Compiling termion v1.3.0
[INFO] [stderr]    Compiling clap v2.24.2
[INFO] [stderr]    Compiling num-complex v0.1.37
[INFO] [stderr]    Compiling ndarray-rand v0.5.0
[INFO] [stderr]    Compiling card-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/germanwhist/engine.rs:141:28
[INFO] [stdout]     |
[INFO] [stdout] 141 |         self.phase.as_ref().borrow()
[INFO] [stdout]     |                            ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `dyn GamePhase` does not implement `Borrow`, so calling `borrow` on `&dyn GamePhase` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `on_game_action` is never used
[INFO] [stdout]   --> src/bin/basic_player.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | trait Player {
[INFO] [stdout]    |       ------ method in this trait
[INFO] [stdout] 18 |     fn on_game_action(&mut self, _ev: &GameEvent) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.48s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.8.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "c0ba48e7e49d180bc037586f60b07e5bfe25e441fd2732fa715bf0ce1311ac32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0ba48e7e49d180bc037586f60b07e5bfe25e441fd2732fa715bf0ce1311ac32", kill_on_drop: false }`
[INFO] [stdout] c0ba48e7e49d180bc037586f60b07e5bfe25e441fd2732fa715bf0ce1311ac32
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bfb49e58e9040814b228106d135598938c8ce9e7f7a0ddc53ab5ccddb3f11a9e
[INFO] running `Command { std: "docker" "start" "-a" "bfb49e58e9040814b228106d135598938c8ce9e7f7a0ddc53ab5ccddb3f11a9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling card-engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/germanwhist/engine.rs:141:28
[INFO] [stdout]     |
[INFO] [stdout] 141 |         self.phase.as_ref().borrow()
[INFO] [stdout]     |                            ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `dyn GamePhase` does not implement `Borrow`, so calling `borrow` on `&dyn GamePhase` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `on_game_action` is never used
[INFO] [stdout]   --> src/bin/basic_player.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | trait Player {
[INFO] [stdout]    |       ------ method in this trait
[INFO] [stdout] 18 |     fn on_game_action(&mut self, _ev: &GameEvent) {}
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/germanwhist/engine.rs:141:28
[INFO] [stdout]     |
[INFO] [stdout] 141 |         self.phase.as_ref().borrow()
[INFO] [stdout]     |                            ^^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `dyn GamePhase` does not implement `Borrow`, so calling `borrow` on `&dyn GamePhase` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.70s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bitflags v0.8.2
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "bfb49e58e9040814b228106d135598938c8ce9e7f7a0ddc53ab5ccddb3f11a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfb49e58e9040814b228106d135598938c8ce9e7f7a0ddc53ab5ccddb3f11a9e", kill_on_drop: false }`
[INFO] [stdout] bfb49e58e9040814b228106d135598938c8ce9e7f7a0ddc53ab5ccddb3f11a9e