[INFO] fetching crate weakjson 0.0.7...
[INFO] checking weakjson-0.0.7 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate weakjson 0.0.7 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate weakjson 0.0.7 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate weakjson 0.0.7
[INFO] finished tweaking crates.io crate weakjson 0.0.7
[INFO] tweaked toml for crates.io crate weakjson 0.0.7 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebc15e86a545c93d27a28dbad0ecd5c93c3629e6f0fd3ce340c5e7af60f1b429
[INFO] running `Command { std: "docker" "start" "-a" "ebc15e86a545c93d27a28dbad0ecd5c93c3629e6f0fd3ce340c5e7af60f1b429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebc15e86a545c93d27a28dbad0ecd5c93c3629e6f0fd3ce340c5e7af60f1b429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebc15e86a545c93d27a28dbad0ecd5c93c3629e6f0fd3ce340c5e7af60f1b429", kill_on_drop: false }`
[INFO] [stdout] ebc15e86a545c93d27a28dbad0ecd5c93c3629e6f0fd3ce340c5e7af60f1b429
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48f7d1e6f3c2608721a4d77e41ad40b3bf848ffffe7f0f90722cb53f98989065
[INFO] running `Command { std: "docker" "start" "-a" "48f7d1e6f3c2608721a4d77e41ad40b3bf848ffffe7f0f90722cb53f98989065", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]     Checking weakjson v0.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0573]: expected type, found variant `String`
[INFO] [stdout]   --> src/weak_tests.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 | fn mk_object(items: &[(String, Json)]) -> Json {
[INFO] [stdout]    |                        ^^^^^^ not a type
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct instead
[INFO] [stdout]    |
[INFO] [stdout] 1  + use std::string::String;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0573`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `weakjson` (lib test) due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "48f7d1e6f3c2608721a4d77e41ad40b3bf848ffffe7f0f90722cb53f98989065", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48f7d1e6f3c2608721a4d77e41ad40b3bf848ffffe7f0f90722cb53f98989065", kill_on_drop: false }`
[INFO] [stdout] 48f7d1e6f3c2608721a4d77e41ad40b3bf848ffffe7f0f90722cb53f98989065