[INFO] updating cached repository https://github.com/jit-y/diff_json
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 71764bdfc8d7f81964338b529e508948d93029d0
[INFO] testing jit-y/diff_json against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjit-y%2Fdiff_json" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jit-y/diff_json on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-2/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 `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] 2a9c59cbba1b71da5b42436ff95ce84ec9c9c092e42316f768372a93347a9e40
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "2a9c59cbba1b71da5b42436ff95ce84ec9c9c092e42316f768372a93347a9e40"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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] [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: method is never used: `to_pretty`
[INFO] [stderr]  --> src/prettier.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn to_pretty() {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.85s
[INFO] running `"docker" "inspect" "2a9c59cbba1b71da5b42436ff95ce84ec9c9c092e42316f768372a93347a9e40"`
[INFO] running `"docker" "rm" "-f" "2a9c59cbba1b71da5b42436ff95ce84ec9c9c092e42316f768372a93347a9e40"`
[INFO] [stdout] 2a9c59cbba1b71da5b42436ff95ce84ec9c9c092e42316f768372a93347a9e40
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8fb2b79b2c24cca98c8f5cd2a8ec92307efcdaa06d610d987a84dacc2a099314
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "8fb2b79b2c24cca98c8f5cd2a8ec92307efcdaa06d610d987a84dacc2a099314"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling diff_json v0.1.0 (/opt/rustwide/workdir)
[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: method is never used: `to_pretty`
[INFO] [stderr]  --> src/prettier.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn to_pretty() {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[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: method is never used: `to_pretty`
[INFO] [stderr]  --> src/prettier.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn to_pretty() {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `"docker" "inspect" "8fb2b79b2c24cca98c8f5cd2a8ec92307efcdaa06d610d987a84dacc2a099314"`
[INFO] running `"docker" "rm" "-f" "8fb2b79b2c24cca98c8f5cd2a8ec92307efcdaa06d610d987a84dacc2a099314"`
[INFO] [stdout] 8fb2b79b2c24cca98c8f5cd2a8ec92307efcdaa06d610d987a84dacc2a099314
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b248543b6cb8f616c375053599b92d9b336099d5e84321e8277d934b16fc6724
[INFO] running `"docker" "start" "-a" "b248543b6cb8f616c375053599b92d9b336099d5e84321e8277d934b16fc6724"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[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: method is never used: `to_pretty`
[INFO] [stderr]  --> src/prettier.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn to_pretty() {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[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: method is never used: `to_pretty`
[INFO] [stderr]  --> src/prettier.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub fn to_pretty() {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/diff_json-531765125835f3ed
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/diff_json-6a150e158e7a64a5
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b248543b6cb8f616c375053599b92d9b336099d5e84321e8277d934b16fc6724"`
[INFO] running `"docker" "rm" "-f" "b248543b6cb8f616c375053599b92d9b336099d5e84321e8277d934b16fc6724"`
[INFO] [stdout] b248543b6cb8f616c375053599b92d9b336099d5e84321e8277d934b16fc6724