[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] a20e0a2bfd4f28ec8a00f2099ad69656225ffecb
[INFO] checking EgorKulikov/rust_algo against try#901e6d56697c79b2e80df6a487b2318ec6f57ee3 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEgorKulikov%2Frust_algo" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EgorKulikov/rust_algo on toolchain 901e6d56697c79b2e80df6a487b2318ec6f57ee3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config.toml
[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-3-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" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2998d6d8058b3f3890bc0b2ad644a3bae02a62c2909557a7d6264ff89751f2db
[INFO] running `Command { std: "docker" "start" "-a" "2998d6d8058b3f3890bc0b2ad644a3bae02a62c2909557a7d6264ff89751f2db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2998d6d8058b3f3890bc0b2ad644a3bae02a62c2909557a7d6264ff89751f2db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2998d6d8058b3f3890bc0b2ad644a3bae02a62c2909557a7d6264ff89751f2db", kill_on_drop: false }`
[INFO] [stdout] 2998d6d8058b3f3890bc0b2ad644a3bae02a62c2909557a7d6264ff89751f2db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+901e6d56697c79b2e80df6a487b2318ec6f57ee3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 05efc25adcc0352f18b8395662d0c46bd388e3d08f262acaf7517c06e39988b0
[INFO] running `Command { std: "docker" "start" "-a" "05efc25adcc0352f18b8395662d0c46bd388e3d08f262acaf7517c06e39988b0", kill_on_drop: false }`
[INFO] [stderr]     Checking algo_lib v0.1.0 (/opt/rustwide/workdir/algo_lib)
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking yansi v1.0.1
[INFO] [stderr]     Checking memchr v2.7.4
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking pretty_assertions v1.4.1
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stdout] error[E0515]: cannot return reference to temporary value
[INFO] [stdout]    --> algo_lib/src/collections/treap/mod.rs:178:13
[INFO] [stdout]     |
[INFO] [stdout] 178 |             &Self::NULL_NODE
[INFO] [stdout]     |             ^---------------
[INFO] [stdout]     |             ||
[INFO] [stdout]     |             |temporary value created here
[INFO] [stdout]     |             returns a reference to data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return reference to temporary value
[INFO] [stdout]    --> algo_lib/src/collections/treap/mod.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |             &Self::NULL_NODE
[INFO] [stdout]     |             ^---------------
[INFO] [stdout]     |             ||
[INFO] [stdout]     |             |temporary value created here
[INFO] [stdout]     |             returns a reference to data owned by the current function
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0515`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `algo_lib` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "05efc25adcc0352f18b8395662d0c46bd388e3d08f262acaf7517c06e39988b0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05efc25adcc0352f18b8395662d0c46bd388e3d08f262acaf7517c06e39988b0", kill_on_drop: false }`
[INFO] [stdout] 05efc25adcc0352f18b8395662d0c46bd388e3d08f262acaf7517c06e39988b0