[INFO] updating cached repository felipesere/jsondiffers
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/felipesere/jsondiffers
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/felipesere/jsondiffers" "work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/felipesere/jsondiffers"`
[INFO] [stderr] Cloning into 'work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/felipesere/jsondiffers'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/felipesere/jsondiffers" "work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/felipesere/jsondiffers"`
[INFO] [stderr] Cloning into 'work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/felipesere/jsondiffers'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f18a55ac78b88b64ab7bd70c611d45d0351a0328
[INFO] sha for GitHub repo felipesere/jsondiffers: f18a55ac78b88b64ab7bd70c611d45d0351a0328
[INFO] validating manifest of felipesere/jsondiffers on toolchain master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of felipesere/jsondiffers on toolchain try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing felipesere/jsondiffers
[INFO] finished frobbing felipesere/jsondiffers
[INFO] frobbed toml for felipesere/jsondiffers written to work/ex/pr-61753/sources/master#8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be/gh/felipesere/jsondiffers/Cargo.toml
[INFO] started frobbing felipesere/jsondiffers
[INFO] finished frobbing felipesere/jsondiffers
[INFO] frobbed toml for felipesere/jsondiffers written to work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/felipesere/jsondiffers/Cargo.toml
[INFO] crate felipesere/jsondiffers already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8e948df707ea8a3c88c65bf2ffdcb2f1cf5491be-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking felipesere/jsondiffers against try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af for pr-61753
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61753/worker-4/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61753/sources/try#af22dfc7f56a5057c6b6120a65c74e7b6c1530af/gh/felipesere/jsondiffers:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+af22dfc7f56a5057c6b6120a65c74e7b6c1530af-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] bdae3cca9ffe4d39f5c0688b995fe423cc4b12d079e5e3ac4da101e452611392
[INFO] running `"docker" "start" "-a" "bdae3cca9ffe4d39f5c0688b995fe423cc4b12d079e5e3ac4da101e452611392"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Checking jsondiffers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `stringify`
[INFO] [stderr]  --> src/printer.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn stringify(val: Value) -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print`
[INFO] [stderr]   --> src/printer.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | fn print(output: &mut String, value: Value) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_object`
[INFO] [stderr]   --> src/printer.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn print_object(output: &mut String, object: Map<String, Value>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `print_array`
[INFO] [stderr]   --> src/printer.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn print_array(output: &mut String, values: Vec<Value>) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string`
[INFO] [stderr]   --> src/printer.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | fn string(output: &mut String, value: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `"docker" "inspect" "bdae3cca9ffe4d39f5c0688b995fe423cc4b12d079e5e3ac4da101e452611392"`
[INFO] running `"docker" "rm" "-f" "bdae3cca9ffe4d39f5c0688b995fe423cc4b12d079e5e3ac4da101e452611392"`
[INFO] [stdout] bdae3cca9ffe4d39f5c0688b995fe423cc4b12d079e5e3ac4da101e452611392