[INFO] fetching crate data-utility-belt 0.1.5...
[INFO] checking data-utility-belt-0.1.5 against master#9610dfe5a9a731ced1ea4923ecbd0c57fe367898 for beta-170-4
[INFO] extracting crate data-utility-belt 0.1.5 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate data-utility-belt 0.1.5 on toolchain 9610dfe5a9a731ced1ea4923ecbd0c57fe367898
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate data-utility-belt 0.1.5
[INFO] finished tweaking crates.io crate data-utility-belt 0.1.5
[INFO] tweaked toml for crates.io crate data-utility-belt 0.1.5 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab73713246560c3299c6931accf75a0095ad0b353fa92eb89d10ff2ce7206527
[INFO] running `Command { std: "docker" "start" "-a" "ab73713246560c3299c6931accf75a0095ad0b353fa92eb89d10ff2ce7206527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab73713246560c3299c6931accf75a0095ad0b353fa92eb89d10ff2ce7206527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab73713246560c3299c6931accf75a0095ad0b353fa92eb89d10ff2ce7206527", kill_on_drop: false }`
[INFO] [stdout] ab73713246560c3299c6931accf75a0095ad0b353fa92eb89d10ff2ce7206527
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+9610dfe5a9a731ced1ea4923ecbd0c57fe367898" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b9f57c9d021a255bb04006c55a95181c3577f3d4e18ea7765d1e4808aa9e2d91
[INFO] running `Command { std: "docker" "start" "-a" "b9f57c9d021a255bb04006c55a95181c3577f3d4e18ea7765d1e4808aa9e2d91", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling serde v1.0.163
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]     Checking regex-syntax v0.7.2
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking aho-corasick v1.0.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking regex v1.8.3
[INFO] [stderr]     Checking data-utility-belt v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Map`
[INFO] [stdout]  --> src/is_different.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde_json::{json, Map, Value};
[INFO] [stdout]   |                        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryFrom`
[INFO] [stdout]  --> src/is_different.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write`, `self`
[INFO] [stdout]  --> src/is_different.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Map`
[INFO] [stdout]  --> src/is_different.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serde_json::{json, Map, Value};
[INFO] [stdout]   |                        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryFrom`
[INFO] [stdout]  --> src/is_different.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Write`, `self`
[INFO] [stdout]  --> src/is_different.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{self, Write};
[INFO] [stdout]   |               ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp_object_differences_pointer`
[INFO] [stdout]    --> src/is_different.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut tmp_object_differences_pointer = &object_differences;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tmp_object_differences_pointer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tmp_object_differences_pointer`
[INFO] [stdout]    --> src/is_different.rs:109:17
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut tmp_object_differences_pointer = &object_differences;
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_tmp_object_differences_pointer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/is_different.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut pointer = &parent_pointer.to_owned();
[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] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/is_different.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut tmp_object_differences_pointer = &object_differences;
[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/is_different.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut pointer = &parent_pointer.to_owned();
[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] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/is_different.rs:109:13
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let mut tmp_object_differences_pointer = &object_differences;
[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/is_different.rs:279:9
[INFO] [stdout]     |
[INFO] [stdout] 279 |     let mut o = json!({ "array":[4] });
[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/is_different.rs:280:9
[INFO] [stdout]     |
[INFO] [stdout] 280 |     let mut o_c = json!({"array": [1] });
[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/is_different.rs:296:9
[INFO] [stdout]     |
[INFO] [stdout] 296 |     let mut result = json!({
[INFO] [stdout]     |         ----^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o_c`
[INFO] [stdout]    --> src/main.rs:232:13
[INFO] [stdout]     |
[INFO] [stdout] 232 |         let o_c: Map<String, Value> = parsed_object_compare.as_object().unwrap().clone();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_o_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `o_c`
[INFO] [stdout]    --> src/main.rs:232:13
[INFO] [stdout]     |
[INFO] [stdout] 232 |         let o_c: Map<String, Value> = parsed_object_compare.as_object().unwrap().clone();
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_o_c`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             let mut parent_key: Vec<String> = Vec::new();
[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/main.rs:239:17
[INFO] [stdout]     |
[INFO] [stdout] 239 |             let mut parent_key: Vec<String> = Vec::new();
[INFO] [stdout]     |                 ----^^^^^^^^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `Command { std: "docker" "inspect" "b9f57c9d021a255bb04006c55a95181c3577f3d4e18ea7765d1e4808aa9e2d91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9f57c9d021a255bb04006c55a95181c3577f3d4e18ea7765d1e4808aa9e2d91", kill_on_drop: false }`
[INFO] [stdout] b9f57c9d021a255bb04006c55a95181c3577f3d4e18ea7765d1e4808aa9e2d91
