[INFO] cloning repository https://github.com/CamJN/jsonqrst
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CamJN/jsonqrst" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCamJN%2Fjsonqrst", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCamJN%2Fjsonqrst'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed5e92701a1cf084896e583da3217d06a413c3a6
[INFO] checking CamJN/jsonqrst against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCamJN%2Fjsonqrst" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CamJN/jsonqrst on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CamJN/jsonqrst
[INFO] finished tweaking git repo https://github.com/CamJN/jsonqrst
[INFO] tweaked toml for git repo https://github.com/CamJN/jsonqrst written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/CamJN/jsonqrst already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.10
[INFO] [stderr]   Downloaded libc v0.2.26
[INFO] [stderr]   Downloaded nom v3.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c704affa0dd9e533973603f4925300dd349e245bfc87cc07c1c96bae6f0a29c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8c704affa0dd9e533973603f4925300dd349e245bfc87cc07c1c96bae6f0a29c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c704affa0dd9e533973603f4925300dd349e245bfc87cc07c1c96bae6f0a29c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c704affa0dd9e533973603f4925300dd349e245bfc87cc07c1c96bae6f0a29c", kill_on_drop: false }`
[INFO] [stdout] 8c704affa0dd9e533973603f4925300dd349e245bfc87cc07c1c96bae6f0a29c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6d12833d7121020c9780ce9d30f9a436a0bfdb3dfe04e53f9b7acc5cffe4ef8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e6d12833d7121020c9780ce9d30f9a436a0bfdb3dfe04e53f9b7acc5cffe4ef8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.26
[INFO] [stderr]     Checking itoa v0.3.1
[INFO] [stderr]     Checking serde v1.0.10
[INFO] [stderr]     Checking dtoa v0.4.1
[INFO] [stderr]     Checking memchr v1.0.1
[INFO] [stderr]     Checking atty v0.2.2
[INFO] [stderr]     Checking nom v3.1.0
[INFO] [stderr]     Checking serde_json v1.0.2
[INFO] [stderr]     Checking jsonqrst v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `unwrap` found for enum `serde_json::Value` in the current scope
[INFO] [stdout]    --> src/main.rs:143:73
[INFO] [stdout]     |
[INFO] [stdout] 143 |         assert_eq!(json!("+44 1234567"), apply_query(data1, "phones.0").unwrap());
[INFO] [stdout]     |                                                                         ^^^^^^ method not found in `serde_json::Value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `unwrap` found for enum `serde_json::Value` in the current scope
[INFO] [stdout]    --> src/main.rs:144:66
[INFO] [stdout]     |
[INFO] [stdout] 144 |         assert_eq!(json!("John Doe"), apply_query(data2, "name").unwrap());
[INFO] [stdout]     |                                                                  ^^^^^^ method not found in `serde_json::Value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jsonqrst`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "e6d12833d7121020c9780ce9d30f9a436a0bfdb3dfe04e53f9b7acc5cffe4ef8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6d12833d7121020c9780ce9d30f9a436a0bfdb3dfe04e53f9b7acc5cffe4ef8", kill_on_drop: false }`
[INFO] [stdout] e6d12833d7121020c9780ce9d30f9a436a0bfdb3dfe04e53f9b7acc5cffe4ef8