[INFO] cloning repository https://github.com/Anfid/presentation
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Anfid/presentation" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnfid%2Fpresentation", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnfid%2Fpresentation'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 17a1c2c7317411c8193b51116b5ce24356e85eb5
[INFO] checking Anfid/presentation against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnfid%2Fpresentation" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Anfid/presentation on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Anfid/presentation
[INFO] finished tweaking git repo https://github.com/Anfid/presentation
[INFO] tweaked toml for git repo https://github.com/Anfid/presentation written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Anfid/presentation already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "metadata" "--no-deps" "--format-version=1", 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] c8d89dffda2d675bb47b610ed3d36c15a5a27de3ca64ad2e05ca9ab2fd85e662
[INFO] running `Command { std: "docker" "start" "-a" "c8d89dffda2d675bb47b610ed3d36c15a5a27de3ca64ad2e05ca9ab2fd85e662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8d89dffda2d675bb47b610ed3d36c15a5a27de3ca64ad2e05ca9ab2fd85e662", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8d89dffda2d675bb47b610ed3d36c15a5a27de3ca64ad2e05ca9ab2fd85e662", kill_on_drop: false }`
[INFO] [stdout] c8d89dffda2d675bb47b610ed3d36c15a5a27de3ca64ad2e05ca9ab2fd85e662
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d838e5b9b9f2fc4f7a2a6e8a7e192ea48bb31b14298ea9f891e74a3fcf50d64c
[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" "d838e5b9b9f2fc4f7a2a6e8a7e192ea48bb31b14298ea9f891e74a3fcf50d64c", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rayon-core v1.6.0
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking presentation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/bin/borrowing.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     x = String::from("Hello");
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0506]: cannot assign to `x` because it is borrowed
[INFO] [stdout]   --> src/bin/borrowing.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let y = &x;
[INFO] [stdout]    |             -- borrow of `x` occurs here
[INFO] [stdout] 11 | 
[INFO] [stdout] 12 |     x = String::from("Hello");
[INFO] [stdout]    |     ^ assignment to borrowed `x` occurs here
[INFO] [stdout] 13 | 
[INFO] [stdout] 14 |     println!("{}", y);
[INFO] [stdout]    |                    - borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0506`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `presentation`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: value assigned to `x` is never read
[INFO] [stdout]   --> src/bin/borrowing.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     x = String::from("Hello");
[INFO] [stdout]    |     ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0506]: cannot assign to `x` because it is borrowed
[INFO] [stdout]   --> src/bin/borrowing.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let y = &x;
[INFO] [stdout]    |             -- borrow of `x` occurs here
[INFO] [stdout] 11 | 
[INFO] [stdout] 12 |     x = String::from("Hello");
[INFO] [stdout]    |     ^ assignment to borrowed `x` occurs here
[INFO] [stdout] 13 | 
[INFO] [stdout] 14 |     println!("{}", y);
[INFO] [stdout]    |                    - borrow later used here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0506`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d838e5b9b9f2fc4f7a2a6e8a7e192ea48bb31b14298ea9f891e74a3fcf50d64c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d838e5b9b9f2fc4f7a2a6e8a7e192ea48bb31b14298ea9f891e74a3fcf50d64c", kill_on_drop: false }`
[INFO] [stdout] d838e5b9b9f2fc4f7a2a6e8a7e192ea48bb31b14298ea9f891e74a3fcf50d64c