[INFO] cloning repository https://github.com/EgorKulikov/rust_algo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EgorKulikov/rust_algo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEgorKulikov%2Frust_algo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEgorKulikov%2Frust_algo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7bf2c4b6989b6445a2a1a4721269ac3c66984c10
[INFO] checking EgorKulikov/rust_algo against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEgorKulikov%2Frust_algo" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EgorKulikov/rust_algo on toolchain 024378d9203a4009ed73d6db2681b88a8d74ce7a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EgorKulikov/rust_algo
[INFO] finished tweaking git repo https://github.com/EgorKulikov/rust_algo
[INFO] tweaked toml for git repo https://github.com/EgorKulikov/rust_algo written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/EgorKulikov/rust_algo 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" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: some crates are on edition 2021 which defaults to `resolver = "2"`, but virtual workspaces default to `resolver = "1"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9649ed0ca654ea091bc9927d1a098b5253552f782488daca91e4de58eee83a60
[INFO] running `Command { std: "docker" "start" "-a" "9649ed0ca654ea091bc9927d1a098b5253552f782488daca91e4de58eee83a60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9649ed0ca654ea091bc9927d1a098b5253552f782488daca91e4de58eee83a60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9649ed0ca654ea091bc9927d1a098b5253552f782488daca91e4de58eee83a60", kill_on_drop: false }`
[INFO] [stdout] 9649ed0ca654ea091bc9927d1a098b5253552f782488daca91e4de58eee83a60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d1f3ec81698d307fe7d747f83e4f451539b93394f094951890537e465106d07
[INFO] running `Command { std: "docker" "start" "-a" "3d1f3ec81698d307fe7d747f83e4f451539b93394f094951890537e465106d07", kill_on_drop: false }`
[INFO] [stderr] warning: some crates are on edition 2021 which defaults to `resolver = "2"`, but virtual workspaces default to `resolver = "1"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking algo_lib v0.1.0 (/opt/rustwide/workdir/algo_lib)
[INFO] [stderr]     Checking main v0.1.0 (/opt/rustwide/workdir/main)
[INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> algo_lib/src/collections/treap.rs:167:23
[INFO] [stdout]     |
[INFO] [stdout] 167 |         Iter::new(self.borrow(), r)
[INFO] [stdout]     |                       ^^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `TreapNode<P>` does not implement `Borrow`, so calling `borrow` on `&TreapNode<P>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&Vec<u8>` instead of dereferencing the inner type
[INFO] [stdout]    --> algo_lib/src/string/string.rs:227:41
[INFO] [stdout]     |
[INFO] [stdout] 227 |             Str::VecRef(s) => Str::Vec(s.deref().clone(), PhantomData::default()),
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> algo_lib/src/collections/treap.rs:167:23
[INFO] [stdout]     |
[INFO] [stdout] 167 |         Iter::new(self.borrow(), r)
[INFO] [stdout]     |                       ^^^^^^^^^ unnecessary method call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `TreapNode<P>` does not implement `Borrow`, so calling `borrow` on `&TreapNode<P>` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.deref()` on a double reference, which returns `&Vec<u8>` instead of dereferencing the inner type
[INFO] [stdout]    --> algo_lib/src/string/string.rs:227:41
[INFO] [stdout]     |
[INFO] [stdout] 227 |             Str::VecRef(s) => Str::Vec(s.deref().clone(), PhantomData::default()),
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `algo_lib` (lib) due to 2 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `algo_lib` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "3d1f3ec81698d307fe7d747f83e4f451539b93394f094951890537e465106d07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d1f3ec81698d307fe7d747f83e4f451539b93394f094951890537e465106d07", kill_on_drop: false }`
[INFO] [stdout] 3d1f3ec81698d307fe7d747f83e4f451539b93394f094951890537e465106d07