[INFO] cloning repository https://github.com/bluecereal/affirmations
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bluecereal/affirmations" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluecereal%2Faffirmations", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluecereal%2Faffirmations'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 45da44dd7e74a81c210303debf904493f5b11dfc
[INFO] checking bluecereal/affirmations against master#de32266a1780aa4ef748ce7f6200a1554fad0aca for pr-75585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbluecereal%2Faffirmations" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bluecereal/affirmations on toolchain de32266a1780aa4ef748ce7f6200a1554fad0aca
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bluecereal/affirmations
[INFO] finished tweaking git repo https://github.com/bluecereal/affirmations
[INFO] tweaked toml for git repo https://github.com/bluecereal/affirmations written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/bluecereal/affirmations already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b0c322706148ab4d2404eb23904b25ebdb2e0a229204317d3241f919c412dbcf
[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" "b0c322706148ab4d2404eb23904b25ebdb2e0a229204317d3241f919c412dbcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0c322706148ab4d2404eb23904b25ebdb2e0a229204317d3241f919c412dbcf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0c322706148ab4d2404eb23904b25ebdb2e0a229204317d3241f919c412dbcf", kill_on_drop: false }`
[INFO] [stdout] b0c322706148ab4d2404eb23904b25ebdb2e0a229204317d3241f919c412dbcf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+de32266a1780aa4ef748ce7f6200a1554fad0aca" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a334b250a56fa604eed387119f1c96aada0b992ff51eddac357bad41ec9d69aa
[INFO] running `Command { std: "docker" "start" "-a" "a334b250a56fa604eed387119f1c96aada0b992ff51eddac357bad41ec9d69aa", kill_on_drop: false }`
[INFO] [stderr]     Checking affirmations v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the type `[std::string::String]` cannot be indexed by `&std::string::String`
[INFO] [stdout]   --> src/main.rs:33:52
[INFO] [stdout]    |
[INFO] [stdout] 33 |             std::io::Write::write(&mut self.store, slice[i]).unwrap();
[INFO] [stdout]    |                                                    ^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::slice::SliceIndex<[std::string::String]>` is not implemented for `&std::string::String`
[INFO] [stdout]    = note: required because of the requirements on the impl of `std::ops::Index<&std::string::String>` for `[std::string::String]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `affirmations`.
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0277]: the type `[std::string::String]` cannot be indexed by `&std::string::String`
[INFO] [stdout]   --> src/main.rs:33:52
[INFO] [stdout]    |
[INFO] [stdout] 33 |             std::io::Write::write(&mut self.store, slice[i]).unwrap();
[INFO] [stdout]    |                                                    ^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::slice::SliceIndex<[std::string::String]>` is not implemented for `&std::string::String`
[INFO] [stdout]    = note: required because of the requirements on the impl of `std::ops::Index<&std::string::String>` for `[std::string::String]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a334b250a56fa604eed387119f1c96aada0b992ff51eddac357bad41ec9d69aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a334b250a56fa604eed387119f1c96aada0b992ff51eddac357bad41ec9d69aa", kill_on_drop: false }`
[INFO] [stdout] a334b250a56fa604eed387119f1c96aada0b992ff51eddac357bad41ec9d69aa