[INFO] updating cached repository qaul/json-api
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/qaul/json-api
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/qaul/json-api" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/qaul/json-api"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/qaul/json-api'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/qaul/json-api" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/qaul/json-api"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/qaul/json-api'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6238495ab294b1298af4a4908b4d8515ac2be195
[INFO] sha for GitHub repo qaul/json-api: 6238495ab294b1298af4a4908b4d8515ac2be195
[INFO] validating manifest of qaul/json-api on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of qaul/json-api on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing qaul/json-api
[INFO] finished frobbing qaul/json-api
[INFO] frobbed toml for qaul/json-api written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/qaul/json-api/Cargo.toml
[INFO] started frobbing qaul/json-api
[INFO] finished frobbing qaul/json-api
[INFO] frobbed toml for qaul/json-api written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/qaul/json-api/Cargo.toml
[INFO] crate qaul/json-api already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking qaul/json-api against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/qaul/json-api:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] db5a40647c510c8580682165a20868fdb2058396d3579af3723e13ec51d792c6
[INFO] running `"docker" "start" "-a" "db5a40647c510c8580682165a20868fdb2058396d3579af3723e13ec51d792c6"`
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]     Checking json-api v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Deserialize`
[INFO] [stderr]  --> src/optional_vec.rs:1:31
[INFO] [stderr]   |
[INFO] [stderr] 1 | use serde_derive::{Serialize, Deserialize};
[INFO] [stderr]   |                               ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/object/resource.rs:3:18
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serde_json::{Error, Value, self};
[INFO] [stderr]   |                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TryInto`
[INFO] [stderr]  --> src/object/resource.rs:4:29
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::convert::{TryFrom, TryInto};
[INFO] [stderr]   |                             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Links`, `Relationships`
[INFO] [stderr]  --> src/object/identifier.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::{Meta, Relationships, Links, GenericObject, ResourceObject, Attributes};
[INFO] [stderr]   |                   ^^^^^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::ObjectConversionError`
[INFO] [stderr]  --> src/object/identifier.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use super::ObjectConversionError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Value`
[INFO] [stderr]  --> src/object/conversion_error.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Value,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::Value`
[INFO] [stderr]  --> src/links.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serde_json::Value;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Error`
[INFO] [stderr]  --> src/object/resource.rs:3:18
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serde_json::{Error, Value, self};
[INFO] [stderr]   |                  ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Links`, `Relationships`
[INFO] [stderr]  --> src/object/identifier.rs:1:19
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::{Meta, Relationships, Links, GenericObject, ResourceObject, Attributes};
[INFO] [stderr]   |                   ^^^^^^^^^^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::ObjectConversionError`
[INFO] [stderr]  --> src/object/identifier.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use super::ObjectConversionError;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Value`
[INFO] [stderr]  --> src/object/conversion_error.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     Value,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `serde_json::Value`
[INFO] [stderr]  --> src/links.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use serde_json::Value;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]   --> src/object/resource.rs:73:14
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn links(id: &str) -> Option<Links> {
[INFO] [stderr]    |              ^^ help: consider prefixing with an underscore: `_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `id`
[INFO] [stderr]   --> src/object/resource.rs:73:14
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn links(id: &str) -> Option<Links> {
[INFO] [stderr]    |              ^^ help: consider prefixing with an underscore: `_id`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Relationships`
[INFO] [stderr]  --> tests/article.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Relationships, 
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `json`
[INFO] [stderr]   --> tests/article.rs:13:24
[INFO] [stderr]    |
[INFO] [stderr] 13 | use serde_json::{self, json};
[INFO] [stderr]    |                        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert::TryInto`
[INFO] [stderr]   --> tests/article.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::convert::TryInto;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.81s
[INFO] running `"docker" "inspect" "db5a40647c510c8580682165a20868fdb2058396d3579af3723e13ec51d792c6"`
[INFO] running `"docker" "rm" "-f" "db5a40647c510c8580682165a20868fdb2058396d3579af3723e13ec51d792c6"`
[INFO] [stdout] db5a40647c510c8580682165a20868fdb2058396d3579af3723e13ec51d792c6