[INFO] cloning repository https://github.com/ryosukeeeee/ddsv
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryosukeeeee/ddsv" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryosukeeeee%2Fddsv", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryosukeeeee%2Fddsv'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 73c951131d49a54240cb42626f435da7006be29e
[INFO] checking ryosukeeeee/ddsv against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryosukeeeee%2Fddsv" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ryosukeeeee/ddsv on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ryosukeeeee/ddsv
[INFO] finished tweaking git repo https://github.com/ryosukeeeee/ddsv
[INFO] tweaked toml for git repo https://github.com/ryosukeeeee/ddsv written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/ryosukeeeee/ddsv already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b9933eaac4332515ef8b27a3a58fc89d54f26b1593a350992038bfab01da962
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4b9933eaac4332515ef8b27a3a58fc89d54f26b1593a350992038bfab01da962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b9933eaac4332515ef8b27a3a58fc89d54f26b1593a350992038bfab01da962", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b9933eaac4332515ef8b27a3a58fc89d54f26b1593a350992038bfab01da962", kill_on_drop: false }`
[INFO] [stdout] 4b9933eaac4332515ef8b27a3a58fc89d54f26b1593a350992038bfab01da962
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 59ae1d177060dafb749690f570fb2a3002557aa91122f7f1209743ff9c961b33
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "59ae1d177060dafb749690f570fb2a3002557aa91122f7f1209743ff9c961b33", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking ddsv v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/ddsv/data.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 | /         &self
[INFO] [stdout] 75 | |             .0
[INFO] [stdout] 76 | |             .iter()
[INFO] [stdout] 77 | |             .map(|v| {
[INFO] [stdout] ...  |
[INFO] [stdout] 80 | |             })
[INFO] [stdout] 81 | |             .collect::<Vec<_>>();
[INFO] [stdout]    | |________________________________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let _ = &self
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/ddsv/data.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 | /         &self
[INFO] [stdout] 84 | |             .0
[INFO] [stdout] 85 | |             .iter()
[INFO] [stdout] 86 | |             .map(|v| {
[INFO] [stdout] ...  |
[INFO] [stdout] 93 | |             })
[INFO] [stdout] 94 | |             .collect::<Vec<_>>();
[INFO] [stdout]    | |________________________________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 83 |         let _ = &self
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/ddsv/data.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 | /         &self
[INFO] [stdout] 75 | |             .0
[INFO] [stdout] 76 | |             .iter()
[INFO] [stdout] 77 | |             .map(|v| {
[INFO] [stdout] ...  |
[INFO] [stdout] 80 | |             })
[INFO] [stdout] 81 | |             .collect::<Vec<_>>();
[INFO] [stdout]    | |________________________________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let _ = &self
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/ddsv/data.rs:83:9
[INFO] [stdout]    |
[INFO] [stdout] 83 | /         &self
[INFO] [stdout] 84 | |             .0
[INFO] [stdout] 85 | |             .iter()
[INFO] [stdout] 86 | |             .map(|v| {
[INFO] [stdout] ...  |
[INFO] [stdout] 93 | |             })
[INFO] [stdout] 94 | |             .collect::<Vec<_>>();
[INFO] [stdout]    | |________________________________^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 83 |         let _ = &self
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.69s
[INFO] running `Command { std: "docker" "inspect" "59ae1d177060dafb749690f570fb2a3002557aa91122f7f1209743ff9c961b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59ae1d177060dafb749690f570fb2a3002557aa91122f7f1209743ff9c961b33", kill_on_drop: false }`
[INFO] [stdout] 59ae1d177060dafb749690f570fb2a3002557aa91122f7f1209743ff9c961b33