[INFO] cloning repository https://github.com/tetsuya-zama/guccicci
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tetsuya-zama/guccicci" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuya-zama%2Fguccicci", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuya-zama%2Fguccicci'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3ce95b9ae38d06417183fce2675652502f8a837
[INFO] checking tetsuya-zama/guccicci against try#bf5ff6675cf10ce009ac02007b064a7cfc4509ac for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftetsuya-zama%2Fguccicci" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tetsuya-zama/guccicci on toolchain bf5ff6675cf10ce009ac02007b064a7cfc4509ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tetsuya-zama/guccicci
[INFO] finished tweaking git repo https://github.com/tetsuya-zama/guccicci
[INFO] tweaked toml for git repo https://github.com/tetsuya-zama/guccicci written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tetsuya-zama/guccicci 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" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3019cbdea7b3f227726e8be1c4c12284654b130da774ed8afca11cf062e18481
[INFO] running `Command { std: "docker" "start" "-a" "3019cbdea7b3f227726e8be1c4c12284654b130da774ed8afca11cf062e18481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3019cbdea7b3f227726e8be1c4c12284654b130da774ed8afca11cf062e18481", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3019cbdea7b3f227726e8be1c4c12284654b130da774ed8afca11cf062e18481", kill_on_drop: false }`
[INFO] [stdout] 3019cbdea7b3f227726e8be1c4c12284654b130da774ed8afca11cf062e18481
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+bf5ff6675cf10ce009ac02007b064a7cfc4509ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eed1d76c9575dffc52187b1f416957d0036135cce3f393d529d4039ab9f11e95
[INFO] running `Command { std: "docker" "start" "-a" "eed1d76c9575dffc52187b1f416957d0036135cce3f393d529d4039ab9f11e95", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling libc v0.2.113
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling anyhow v1.0.53
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking getrandom v0.2.4
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking guccicci v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Person` instead of cloning the inner type
[INFO] [stdout]   --> src/domain.rs:90:94
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let mut leader_candidates: Vec<Person> = setting.leader_candidates().iter().map(|p| p.clone()).cloned().collect();
[INFO] [stdout]    |                                                                                              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Person` instead of cloning the inner type
[INFO] [stdout]   --> src/domain.rs:94:92
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let mut normal_attendees: Vec<Person> = setting.normal_attendees().iter().map(|p| p.clone()).cloned().collect();
[INFO] [stdout]    |                                                                                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&domain::Person` instead of cloning the inner type
[INFO] [stdout]   --> src/domain.rs:90:94
[INFO] [stdout]    |
[INFO] [stdout] 90 |         let mut leader_candidates: Vec<Person> = setting.leader_candidates().iter().map(|p| p.clone()).cloned().collect();
[INFO] [stdout]    |                                                                                              ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&domain::Person` instead of cloning the inner type
[INFO] [stdout]   --> src/domain.rs:94:92
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let mut normal_attendees: Vec<Person> = setting.normal_attendees().iter().map(|p| p.clone()).cloned().collect();
[INFO] [stdout]    |                                                                                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.32s
[INFO] running `Command { std: "docker" "inspect" "eed1d76c9575dffc52187b1f416957d0036135cce3f393d529d4039ab9f11e95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eed1d76c9575dffc52187b1f416957d0036135cce3f393d529d4039ab9f11e95", kill_on_drop: false }`
[INFO] [stdout] eed1d76c9575dffc52187b1f416957d0036135cce3f393d529d4039ab9f11e95