[INFO] cloning repository https://github.com/FlyingPigHasDream/rust_study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FlyingPigHasDream/rust_study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFlyingPigHasDream%2Frust_study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFlyingPigHasDream%2Frust_study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b56b1c2c3cfef6c320183ee916c7647548ac43a7
[INFO] building FlyingPigHasDream/rust_study against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFlyingPigHasDream%2Frust_study" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FlyingPigHasDream/rust_study on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FlyingPigHasDream/rust_study
[INFO] finished tweaking git repo https://github.com/FlyingPigHasDream/rust_study
[INFO] tweaked toml for git repo https://github.com/FlyingPigHasDream/rust_study written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/FlyingPigHasDream/rust_study 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" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 25a49c31b8e6528fb8074698cd031414da6e8e63a45ec6c02f54f548b284a954
[INFO] running `Command { std: "docker" "start" "-a" "25a49c31b8e6528fb8074698cd031414da6e8e63a45ec6c02f54f548b284a954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25a49c31b8e6528fb8074698cd031414da6e8e63a45ec6c02f54f548b284a954", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25a49c31b8e6528fb8074698cd031414da6e8e63a45ec6c02f54f548b284a954", kill_on_drop: false }`
[INFO] [stdout] 25a49c31b8e6528fb8074698cd031414da6e8e63a45ec6c02f54f548b284a954
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dc7f504cb3fcddaae580fca8cc4d04540680574305f5d56d82bbda3c53d1c9d6
[INFO] running `Command { std: "docker" "start" "-a" "dc7f504cb3fcddaae580fca8cc4d04540680574305f5d56d82bbda3c53d1c9d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling test1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: path separator must be a double colon
[INFO] [stdout]   --> src/main.rs:38:25
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let b:Vec<i32> = Vec:new();
[INFO] [stdout]    |                         ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you meant to annotate an expression with a type, the type ascription syntax has been removed, see issue #101728 <https://github.com/rust-lang/rust/issues/101728>
[INFO] [stdout] help: use a double colon instead
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let b:Vec<i32> = Vec::new();
[INFO] [stdout]    |                          +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/main.rs:37:9
[INFO] [stdout]    |
[INFO] [stdout] 37 |     let a = 8;
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> src/main.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let b:Vec<i32> = Vec:new();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]   --> src/main.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let (a,c) = ("hi", false);
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `c`
[INFO] [stdout]   --> src/main.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let (a,c) = ("hi", false);
[INFO] [stdout]    |            ^ help: if this is intentional, prefix it with an underscore: `_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut s = "    ";
[INFO] [stdout]    |         ----^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `test1` (bin "test1") due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "dc7f504cb3fcddaae580fca8cc4d04540680574305f5d56d82bbda3c53d1c9d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc7f504cb3fcddaae580fca8cc4d04540680574305f5d56d82bbda3c53d1c9d6", kill_on_drop: false }`
[INFO] [stdout] dc7f504cb3fcddaae580fca8cc4d04540680574305f5d56d82bbda3c53d1c9d6
