[INFO] cloning repository https://github.com/psatomas/variables-and-mutability
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/psatomas/variables-and-mutability" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Fvariables-and-mutability", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Fvariables-and-mutability'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c800fb111a641f7ee0a5d8e5e990fc78c3c912e2
[INFO] checking psatomas/variables-and-mutability/c800fb111a641f7ee0a5d8e5e990fc78c3c912e2 against master#ca77504943887037504c7fc0b9bf06dab3910373 for pr-145181
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpsatomas%2Fvariables-and-mutability" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/psatomas/variables-and-mutability
[INFO] finished tweaking git repo https://github.com/psatomas/variables-and-mutability
[INFO] tweaked toml for git repo https://github.com/psatomas/variables-and-mutability written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/psatomas/variables-and-mutability on toolchain ca77504943887037504c7fc0b9bf06dab3910373
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/psatomas/variables-and-mutability 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" "+ca77504943887037504c7fc0b9bf06dab3910373" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c568d0c9ddfe5fd8d0eb8461dbbca22dd86ddf3bb0499050da81840db1c36c6
[INFO] running `Command { std: "docker" "start" "-a" "3c568d0c9ddfe5fd8d0eb8461dbbca22dd86ddf3bb0499050da81840db1c36c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c568d0c9ddfe5fd8d0eb8461dbbca22dd86ddf3bb0499050da81840db1c36c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c568d0c9ddfe5fd8d0eb8461dbbca22dd86ddf3bb0499050da81840db1c36c6", kill_on_drop: false }`
[INFO] [stdout] 3c568d0c9ddfe5fd8d0eb8461dbbca22dd86ddf3bb0499050da81840db1c36c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08ab720de913e52f5d3904039f4b6fab8cd5bcfe18264004a290acf28bea7284
[INFO] running `Command { std: "docker" "start" "-a" "08ab720de913e52f5d3904039f4b6fab8cd5bcfe18264004a290acf28bea7284", kill_on_drop: false }`
[INFO] [stderr]     Checking variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `grams_of_protein`
[INFO] [stdout]  --> src/bin/variable_shadowing.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let grams_of_protein = "100.345";
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_grams_of_protein`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grams_of_protein`
[INFO] [stdout]  --> src/bin/variable_shadowing.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let grams_of_protein = 100.345;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_grams_of_protein`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `grams_of_protein` is assigned to, but never used
[INFO] [stdout]  --> src/bin/variable_shadowing.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut grams_of_protein = 100;
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_grams_of_protein` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grams_of_protein` is never read
[INFO] [stdout]  --> src/bin/variable_shadowing.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     grams_of_protein = 105;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fruits`
[INFO] [stdout]  --> src/bin/positional_arguments_to_println.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let fruits = apples + oranges;
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fruits`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `points_scored` is never read
[INFO] [stdout]   --> src/main.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut points_scored: i32 = 28;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event_time`
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let event_time = "06:00";
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_event_time`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fruits`
[INFO] [stdout]  --> src/bin/intro_to_variables.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let fruits = apples + oranges;
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fruits`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grams_of_protein`
[INFO] [stdout]  --> src/bin/variable_shadowing.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 |     let grams_of_protein = "100.345";
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_grams_of_protein`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `grams_of_protein`
[INFO] [stdout]  --> src/bin/variable_shadowing.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let grams_of_protein = 100.345;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_grams_of_protein`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `grams_of_protein` is assigned to, but never used
[INFO] [stdout]  --> src/bin/variable_shadowing.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let mut grams_of_protein = 100;
[INFO] [stdout]   |             ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: consider using `_grams_of_protein` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `grams_of_protein` is never read
[INFO] [stdout]  --> src/bin/variable_shadowing.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     grams_of_protein = 105;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fruits`
[INFO] [stdout]  --> src/bin/interpolation_with_curly_braces.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let fruits = apples + oranges;
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fruits`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `points_scored` is never read
[INFO] [stdout]   --> src/main.rs:41:13
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut points_scored: i32 = 28;
[INFO] [stdout]    |             ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `event_time`
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let event_time = "06:00";
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_event_time`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fruits`
[INFO] [stdout]  --> src/bin/intro_to_variables.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let fruits = apples + oranges;
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fruits`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fruits`
[INFO] [stdout]  --> src/bin/positional_arguments_to_println.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let fruits = apples + oranges;
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fruits`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fruits`
[INFO] [stdout]  --> src/bin/interpolation_with_curly_braces.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 |     let fruits = apples + oranges;
[INFO] [stdout]   |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fruits`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "08ab720de913e52f5d3904039f4b6fab8cd5bcfe18264004a290acf28bea7284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08ab720de913e52f5d3904039f4b6fab8cd5bcfe18264004a290acf28bea7284", kill_on_drop: false }`
[INFO] [stdout] 08ab720de913e52f5d3904039f4b6fab8cd5bcfe18264004a290acf28bea7284