[INFO] cloning repository https://github.com/j-artur/json-parser
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/j-artur/json-parser" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-artur%2Fjson-parser", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-artur%2Fjson-parser'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6f5c354d6df21ef2427cda7c60200dc73e9a3c8e
[INFO] checking j-artur/json-parser against master#d97bb195bf7b84815622b235cb51171c1b8f7e51 for pr-117905
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-artur%2Fjson-parser" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/j-artur/json-parser on toolchain d97bb195bf7b84815622b235cb51171c1b8f7e51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d97bb195bf7b84815622b235cb51171c1b8f7e51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/j-artur/json-parser
[INFO] finished tweaking git repo https://github.com/j-artur/json-parser
[INFO] tweaked toml for git repo https://github.com/j-artur/json-parser written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/j-artur/json-parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d97bb195bf7b84815622b235cb51171c1b8f7e51" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking j-artur/json-parser against try#1930f260edd7e614aa013a0665aa5cfd0ada0501 for pr-117905
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-artur%2Fjson-parser" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/j-artur/json-parser on toolchain 1930f260edd7e614aa013a0665aa5cfd0ada0501
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/j-artur/json-parser
[INFO] finished tweaking git repo https://github.com/j-artur/json-parser
[INFO] tweaked toml for git repo https://github.com/j-artur/json-parser written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/j-artur/json-parser already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 996d6651e5b320099925614a185a06349832fc9e62321aa03bca91389df2afdc
[INFO] running `Command { std: "docker" "start" "-a" "996d6651e5b320099925614a185a06349832fc9e62321aa03bca91389df2afdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "996d6651e5b320099925614a185a06349832fc9e62321aa03bca91389df2afdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "996d6651e5b320099925614a185a06349832fc9e62321aa03bca91389df2afdc", kill_on_drop: false }`
[INFO] [stdout] 996d6651e5b320099925614a185a06349832fc9e62321aa03bca91389df2afdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1930f260edd7e614aa013a0665aa5cfd0ada0501" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c45acbe2ba9f239f7ef37d8afc8676c57ca3da9a0fe6e506f71b6f5f074e7a2b
[INFO] running `Command { std: "docker" "start" "-a" "c45acbe2ba9f239f7ef37d8afc8676c57ca3da9a0fe6e506f71b6f5f074e7a2b", kill_on_drop: false }`
[INFO] [stderr]     Checking json-parser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `string` found for enum `json::Json` in the current scope
[INFO] [stdout]    --> src/lib.rs:18:51
[INFO] [stdout]     |
[INFO] [stdout] 18  |                     println!("value: {:?}", value.string());
[INFO] [stdout]     |                                                   ^^^^^^ method not found in `json::Json`
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/json.rs:9:1
[INFO] [stdout]     |
[INFO] [stdout] 9   | pub enum Json {
[INFO] [stdout]     | ------------- method `string` not found for this enum
[INFO] [stdout] ...
[INFO] [stdout] 267 |     fn string(&self) -> Option<&String>;
[INFO] [stdout]     |        ------ the method is available for `json::Json` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: the following trait is implemented but not in scope; perhaps add a `use` for it:
[INFO] [stdout]     |
[INFO] [stdout] 5   +     use crate::json::JsonValue;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 18  |                     println!("value: {:?}", value.String());
[INFO] [stdout]     |                                                   ~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `json-parser` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "c45acbe2ba9f239f7ef37d8afc8676c57ca3da9a0fe6e506f71b6f5f074e7a2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c45acbe2ba9f239f7ef37d8afc8676c57ca3da9a0fe6e506f71b6f5f074e7a2b", kill_on_drop: false }`
[INFO] [stdout] c45acbe2ba9f239f7ef37d8afc8676c57ca3da9a0fe6e506f71b6f5f074e7a2b