[INFO] cloning repository https://github.com/jit-y/diff_json
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jit-y/diff_json" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjit-y%2Fdiff_json", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjit-y%2Fdiff_json'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71764bdfc8d7f81964338b529e508948d93029d0
[INFO] testing jit-y/diff_json against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjit-y%2Fdiff_json" "/workspace/builds/worker-27/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-27/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jit-y/diff_json on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jit-y/diff_json
[INFO] finished tweaking git repo https://github.com/jit-y/diff_json
[INFO] tweaked toml for git repo https://github.com/jit-y/diff_json written to /workspace/builds/worker-27/source/Cargo.toml
[INFO] crate git repo https://github.com/jit-y/diff_json already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.9
[INFO] [stderr]   Downloaded difference v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a38ebae8cfcdcf08d4e44430f4543685ce42eb3ae90a205913e8fd8a0a2253b
[INFO] running `Command { std: "docker" "start" "-a" "2a38ebae8cfcdcf08d4e44430f4543685ce42eb3ae90a205913e8fd8a0a2253b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a38ebae8cfcdcf08d4e44430f4543685ce42eb3ae90a205913e8fd8a0a2253b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a38ebae8cfcdcf08d4e44430f4543685ce42eb3ae90a205913e8fd8a0a2253b", kill_on_drop: false }`
[INFO] [stdout] 2a38ebae8cfcdcf08d4e44430f4543685ce42eb3ae90a205913e8fd8a0a2253b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14ff0390bdca089bbc4582850d09b18a151a2d0115a90451291839e9032df76f
[INFO] running `Command { std: "docker" "start" "-a" "14ff0390bdca089bbc4582850d09b18a151a2d0115a90451291839e9032df76f", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.27
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling difference v1.0.0
[INFO] [stderr]    Compiling serde_json v1.0.9
[INFO] [stderr]    Compiling diff_json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `JSONPrettier`
[INFO] [stdout]  --> src/prettier.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct JSONPrettier {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_pretty`
[INFO] [stdout]  --> src/prettier.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn to_pretty() {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.27s
[INFO] running `Command { std: "docker" "inspect" "14ff0390bdca089bbc4582850d09b18a151a2d0115a90451291839e9032df76f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14ff0390bdca089bbc4582850d09b18a151a2d0115a90451291839e9032df76f", kill_on_drop: false }`
[INFO] [stdout] 14ff0390bdca089bbc4582850d09b18a151a2d0115a90451291839e9032df76f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f77c73831040d87e7e85ee471dedd6d96184d574042c5830820bcc9b002737f0
[INFO] running `Command { std: "docker" "start" "-a" "f77c73831040d87e7e85ee471dedd6d96184d574042c5830820bcc9b002737f0", kill_on_drop: false }`
[INFO] [stdout] warning: struct is never constructed: `JSONPrettier`
[INFO] [stdout]  --> src/prettier.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct JSONPrettier {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling diff_json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `to_pretty`
[INFO] [stdout]  --> src/prettier.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn to_pretty() {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `JSONPrettier`
[INFO] [stdout]  --> src/prettier.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct JSONPrettier {
[INFO] [stdout]   |        ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_pretty`
[INFO] [stdout]  --> src/prettier.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub fn to_pretty() {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "f77c73831040d87e7e85ee471dedd6d96184d574042c5830820bcc9b002737f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f77c73831040d87e7e85ee471dedd6d96184d574042c5830820bcc9b002737f0", kill_on_drop: false }`
[INFO] [stdout] f77c73831040d87e7e85ee471dedd6d96184d574042c5830820bcc9b002737f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-27/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 502525bfb85378bbfe08553cf806dcc3148bd23fa61f6c9662d6d169ca97b768
[INFO] running `Command { std: "docker" "start" "-a" "502525bfb85378bbfe08553cf806dcc3148bd23fa61f6c9662d6d169ca97b768", kill_on_drop: false }`
[INFO] [stderr] warning: struct is never constructed: `JSONPrettier`
[INFO] [stderr]  --> src/prettier.rs:4:8
[INFO] [stderr]   |
[INFO] [stderr] 4 | struct JSONPrettier {
[INFO] [stderr]   |        ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `to_pretty`
[INFO] [stderr]  --> src/prettier.rs:9:12
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn to_pretty() {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `diff_json` (lib) generated 2 warnings
[INFO] [stderr] warning: `diff_json` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/diff_json-c362cae663472b12)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/diff_json-0c73078a8ed65c35)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests diff_json
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "502525bfb85378bbfe08553cf806dcc3148bd23fa61f6c9662d6d169ca97b768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "502525bfb85378bbfe08553cf806dcc3148bd23fa61f6c9662d6d169ca97b768", kill_on_drop: false }`
[INFO] [stdout] 502525bfb85378bbfe08553cf806dcc3148bd23fa61f6c9662d6d169ca97b768