[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 try#09ea730c380b8b9acb96ff87b724c45df920f793 for pr-134272
[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 09ea730c380b8b9acb96ff87b724c45df920f793
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09ea730c380b8b9acb96ff87b724c45df920f793" "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" "+09ea730c380b8b9acb96ff87b724c45df920f793" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+09ea730c380b8b9acb96ff87b724c45df920f793" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66d8760d685738da282100e8aaf83cd900f19d76a71de09e7baf4bdccd924f5f
[INFO] running `Command { std: "docker" "start" "-a" "66d8760d685738da282100e8aaf83cd900f19d76a71de09e7baf4bdccd924f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66d8760d685738da282100e8aaf83cd900f19d76a71de09e7baf4bdccd924f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66d8760d685738da282100e8aaf83cd900f19d76a71de09e7baf4bdccd924f5f", kill_on_drop: false }`
[INFO] [stdout] 66d8760d685738da282100e8aaf83cd900f19d76a71de09e7baf4bdccd924f5f
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+09ea730c380b8b9acb96ff87b724c45df920f793" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 99a5bd788abcfb095382b3fcc02e1d02c6eb8d1701b783a8310493ae2cb09550
[INFO] running `Command { std: "docker" "start" "-a" "99a5bd788abcfb095382b3fcc02e1d02c6eb8d1701b783a8310493ae2cb09550", 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]     |                                                   ^^^^^^
[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: trait `JsonValue` which provides `string` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 5   +     use crate::json::JsonValue;
[INFO] [stdout]     |
[INFO] [stdout] help: there is a variant with a similar name (notice the capitalization difference)
[INFO] [stdout]     |
[INFO] [stdout] 18  |                     println!("value: {:?}", value.String());
[INFO] [stdout]     |                                                   ~~~~~~
[INFO] [stdout] help: there is a method `to_string` with a similar name
[INFO] [stdout]     |
[INFO] [stdout] 18  |                     println!("value: {:?}", value.to_string());
[INFO] [stdout]     |                                                   ~~~~~~~~~
[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 1 previous error
[INFO] running `Command { std: "docker" "inspect" "99a5bd788abcfb095382b3fcc02e1d02c6eb8d1701b783a8310493ae2cb09550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99a5bd788abcfb095382b3fcc02e1d02c6eb8d1701b783a8310493ae2cb09550", kill_on_drop: false }`
[INFO] [stdout] 99a5bd788abcfb095382b3fcc02e1d02c6eb8d1701b783a8310493ae2cb09550