[INFO] cloning repository https://github.com/zadmainda/Rust_exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zadmainda/Rust_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzadmainda%2FRust_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzadmainda%2FRust_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 39a5c12dcae497fd1e81a33d73239d2f53f4b221
[INFO] checking zadmainda/Rust_exercises against try#3ec2a775459d36c7d90654e47c56ff7bb0d542ab for pr-139087
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzadmainda%2FRust_exercises" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zadmainda/Rust_exercises on toolchain 3ec2a775459d36c7d90654e47c56ff7bb0d542ab
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zadmainda/Rust_exercises
[INFO] finished tweaking git repo https://github.com/zadmainda/Rust_exercises
[INFO] tweaked toml for git repo https://github.com/zadmainda/Rust_exercises written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/zadmainda/Rust_exercises 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" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a54d1ac287463f2b6066dddab0cbab5dfef9bc3c7c02c3e7221e2f4d48df3c10
[INFO] running `Command { std: "docker" "start" "-a" "a54d1ac287463f2b6066dddab0cbab5dfef9bc3c7c02c3e7221e2f4d48df3c10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a54d1ac287463f2b6066dddab0cbab5dfef9bc3c7c02c3e7221e2f4d48df3c10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a54d1ac287463f2b6066dddab0cbab5dfef9bc3c7c02c3e7221e2f4d48df3c10", kill_on_drop: false }`
[INFO] [stdout] a54d1ac287463f2b6066dddab0cbab5dfef9bc3c7c02c3e7221e2f4d48df3c10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+3ec2a775459d36c7d90654e47c56ff7bb0d542ab" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a66ee2a5083c0e2e8c15e17151c54652f7671835497aba89dabff3ca0472fec1
[INFO] running `Command { std: "docker" "start" "-a" "a66ee2a5083c0e2e8c15e17151c54652f7671835497aba89dabff3ca0472fec1", kill_on_drop: false }`
[INFO] [stderr]     Checking project2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: expected item, found keyword `let`
[INFO] [stdout]   --> src/vectors.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | let mut vector_name = Vec::new();
[INFO] [stdout]    | ^^^ `let` cannot be used for global variables
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using `static` and a `Mutex` instead of `let mut`
[INFO] [stdout]    = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected item, found keyword `let`
[INFO] [stdout]   --> src/vectors.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | let mut vector_name = Vec::new();
[INFO] [stdout]    | ^^^ `let` cannot be used for global variables
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using `static` and a `Mutex` instead of `let mut`
[INFO] [stdout]    = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `project2` (bin "project2") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `project2` (bin "project2" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a66ee2a5083c0e2e8c15e17151c54652f7671835497aba89dabff3ca0472fec1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a66ee2a5083c0e2e8c15e17151c54652f7671835497aba89dabff3ca0472fec1", kill_on_drop: false }`
[INFO] [stdout] a66ee2a5083c0e2e8c15e17151c54652f7671835497aba89dabff3ca0472fec1