[INFO] fetching crate scope-cell 0.1.2...
[INFO] building scope-cell-0.1.2 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate scope-cell 0.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate scope-cell 0.1.2
[INFO] finished tweaking crates.io crate scope-cell 0.1.2
[INFO] tweaked toml for crates.io crate scope-cell 0.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate scope-cell 0.1.2 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4704c929f6ed702d71ac44976a8be154d8626ccaf7bbd85cd7bf5a92c9ff2b11
[INFO] running `Command { std: "docker" "start" "-a" "4704c929f6ed702d71ac44976a8be154d8626ccaf7bbd85cd7bf5a92c9ff2b11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4704c929f6ed702d71ac44976a8be154d8626ccaf7bbd85cd7bf5a92c9ff2b11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4704c929f6ed702d71ac44976a8be154d8626ccaf7bbd85cd7bf5a92c9ff2b11", kill_on_drop: false }`
[INFO] [stdout] 4704c929f6ed702d71ac44976a8be154d8626ccaf7bbd85cd7bf5a92c9ff2b11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c54e11b9744ebf8e4d214db7dbb10789ddfd63a9476e20747ff871321ef9efc
[INFO] running `Command { std: "docker" "start" "-a" "2c54e11b9744ebf8e4d214db7dbb10789ddfd63a9476e20747ff871321ef9efc", kill_on_drop: false }`
[INFO] [stderr]    Compiling scope-cell v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "2c54e11b9744ebf8e4d214db7dbb10789ddfd63a9476e20747ff871321ef9efc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c54e11b9744ebf8e4d214db7dbb10789ddfd63a9476e20747ff871321ef9efc", kill_on_drop: false }`
[INFO] [stdout] 2c54e11b9744ebf8e4d214db7dbb10789ddfd63a9476e20747ff871321ef9efc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebd3bb1de43b5ae14464e90fa3b32c591c8b077a2f3ee4967b5ed091fd0f1e23
[INFO] running `Command { std: "docker" "start" "-a" "ebd3bb1de43b5ae14464e90fa3b32c591c8b077a2f3ee4967b5ed091fd0f1e23", kill_on_drop: false }`
[INFO] [stderr]    Compiling scope-cell v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |             let mut scope = ScopeCell::new(&data);
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:131:17
[INFO] [stdout]     |
[INFO] [stdout] 131 |             let mut scope = ScopeCell::new(&data);
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:156:17
[INFO] [stdout]     |
[INFO] [stdout] 156 |             let mut scope = ScopeCell::new(&data);
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:167:17
[INFO] [stdout]     |
[INFO] [stdout] 167 |             let mut Scope = ScopeCell::new(&data);
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:178:17
[INFO] [stdout]     |
[INFO] [stdout] 178 |             let mut Scope = ScopeCell::new(&data);
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:189:17
[INFO] [stdout]     |
[INFO] [stdout] 189 |             let mut Scope = ScopeCell::new(&data);
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:190:17
[INFO] [stdout]     |
[INFO] [stdout] 190 |             let mut borrowed = Scope.get_mut();
[INFO] [stdout]     |                 ----^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:204:17
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let mut scope1 = ScopeCell::new(&data1);
[INFO] [stdout]     |                 ----^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:205:17
[INFO] [stdout]     |
[INFO] [stdout] 205 |             let mut scope2 = ScopeCell::new(&data2);
[INFO] [stdout]     |                 ----^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scope`
[INFO] [stdout]    --> src/lib.rs:229:17
[INFO] [stdout]     |
[INFO] [stdout] 229 |             let scope = ScopeCell::new(&data);
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_scope`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             let mut scope = ScopeCell::new(&data);
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:266:17
[INFO] [stdout]     |
[INFO] [stdout] 266 |             let mut scope = ScopeCell::new(&data);
[INFO] [stdout]     |                 ----^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:270:17
[INFO] [stdout]     |
[INFO] [stdout] 270 |             let mut borrowed_mut = scope.get_mut(); // Mutable borrow
[INFO] [stdout]     |                 ----^^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:282:17
[INFO] [stdout]     |
[INFO] [stdout] 282 |             let mut outer_scope = ScopeCell::new(&data1);
[INFO] [stdout]     |                 ----^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:283:17
[INFO] [stdout]     |
[INFO] [stdout] 283 |             let mut inner_scope = ScopeCell::new(&data2);
[INFO] [stdout]     |                 ----^^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Scope` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:167:21
[INFO] [stdout]     |
[INFO] [stdout] 167 |             let mut Scope = ScopeCell::new(&data);
[INFO] [stdout]     |                     ^^^^^ help: convert the identifier to snake case (notice the capitalization): `scope`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Scope` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:178:21
[INFO] [stdout]     |
[INFO] [stdout] 178 |             let mut Scope = ScopeCell::new(&data);
[INFO] [stdout]     |                     ^^^^^ help: convert the identifier to snake case (notice the capitalization): `scope`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Scope` should have a snake case name
[INFO] [stdout]    --> src/lib.rs:189:21
[INFO] [stdout]     |
[INFO] [stdout] 189 |             let mut Scope = ScopeCell::new(&data);
[INFO] [stdout]     |                     ^^^^^ help: convert the identifier to snake case (notice the capitalization): `scope`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "ebd3bb1de43b5ae14464e90fa3b32c591c8b077a2f3ee4967b5ed091fd0f1e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebd3bb1de43b5ae14464e90fa3b32c591c8b077a2f3ee4967b5ed091fd0f1e23", kill_on_drop: false }`
[INFO] [stdout] ebd3bb1de43b5ae14464e90fa3b32c591c8b077a2f3ee4967b5ed091fd0f1e23
