[INFO] fetching crate chord-core 0.1.21...
[INFO] checking chord-core-0.1.21 against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] extracting crate chord-core 0.1.21 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate chord-core 0.1.21 on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chord-core 0.1.21
[INFO] finished tweaking crates.io crate chord-core 0.1.21
[INFO] tweaked toml for crates.io crate chord-core 0.1.21 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4cb05878dae5ac1afcf3de69c42472e36a95d67fb328893995f208985365d807
[INFO] running `Command { std: "docker" "start" "-a" "4cb05878dae5ac1afcf3de69c42472e36a95d67fb328893995f208985365d807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cb05878dae5ac1afcf3de69c42472e36a95d67fb328893995f208985365d807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cb05878dae5ac1afcf3de69c42472e36a95d67fb328893995f208985365d807", kill_on_drop: false }`
[INFO] [stdout] 4cb05878dae5ac1afcf3de69c42472e36a95d67fb328893995f208985365d807
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84a8165c6d33d5db5a3d95edb0adc208c8bef4d02a3b81c3fd793ac46928368d
[INFO] running `Command { std: "docker" "start" "-a" "84a8165c6d33d5db5a3d95edb0adc208c8bef4d02a3b81c3fd793ac46928368d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling tokio v1.28.2
[INFO] [stderr]    Compiling async-trait v0.1.68
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking iana-time-zone v0.1.56
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling serde_derive v1.0.163
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking thiserror v1.0.40
[INFO] [stderr]     Checking serde v1.0.163
[INFO] [stderr]     Checking serde_json v1.0.96
[INFO] [stderr]     Checking chrono v0.4.26
[INFO] [stderr]     Checking chord-core v0.1.21 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&serde_json::Value` instead of borrowing the inner type
[INFO] [stdout]    --> src/flow.rs:209:29
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let root = self.flow.borrow();
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&serde_json::Value` instead of borrowing the inner type
[INFO] [stdout]    --> src/flow.rs:209:29
[INFO] [stdout]     |
[INFO] [stdout] 209 |         let root = self.flow.borrow();
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&serde_json::Value` instead of borrowing the inner type
[INFO] [stdout]    --> src/flow.rs:235:35
[INFO] [stdout]     |
[INFO] [stdout] 235 |         let pre = self.flow["pre"].borrow();
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&serde_json::Value` instead of borrowing the inner type
[INFO] [stdout]    --> src/flow.rs:235:35
[INFO] [stdout]     |
[INFO] [stdout] 235 |         let pre = self.flow["pre"].borrow();
[INFO] [stdout]     |                                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&serde_json::Value` instead of borrowing the inner type
[INFO] [stdout]    --> src/flow.rs:264:49
[INFO] [stdout]     |
[INFO] [stdout] 264 |         let stage = self.flow["stage"][stage_id].borrow();
[INFO] [stdout]     |                                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&serde_json::Value` instead of borrowing the inner type
[INFO] [stdout]    --> src/flow.rs:264:49
[INFO] [stdout]     |
[INFO] [stdout] 264 |         let stage = self.flow["stage"][stage_id].borrow();
[INFO] [stdout]     |                                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&serde_json::Value` instead of borrowing the inner type
[INFO] [stdout]    --> src/flow.rs:374:69
[INFO] [stdout]     |
[INFO] [stdout] 374 |             let step = self.flow["stage"][stage_id]["step"][step_id].borrow();
[INFO] [stdout]     |                                                                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&serde_json::Value` instead of borrowing the inner type
[INFO] [stdout]    --> src/flow.rs:374:69
[INFO] [stdout]     |
[INFO] [stdout] 374 |             let step = self.flow["stage"][stage_id]["step"][step_id].borrow();
[INFO] [stdout]     |                                                                     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&serde_json::Value` instead of borrowing the inner type
[INFO] [stdout]    --> src/flow.rs:380:49
[INFO] [stdout]     |
[INFO] [stdout] 380 |         return self.flow["pre"]["step"][step_id].borrow();
[INFO] [stdout]     |                                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.borrow()` on a double reference, which returns `&serde_json::Value` instead of borrowing the inner type
[INFO] [stdout]    --> src/flow.rs:380:49
[INFO] [stdout]     |
[INFO] [stdout] 380 |         return self.flow["pre"]["step"][step_id].borrow();
[INFO] [stdout]     |                                                 ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.34s
[INFO] running `Command { std: "docker" "inspect" "84a8165c6d33d5db5a3d95edb0adc208c8bef4d02a3b81c3fd793ac46928368d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84a8165c6d33d5db5a3d95edb0adc208c8bef4d02a3b81c3fd793ac46928368d", kill_on_drop: false }`
[INFO] [stdout] 84a8165c6d33d5db5a3d95edb0adc208c8bef4d02a3b81c3fd793ac46928368d
