[INFO] fetching crate cdumay_error_json 0.1.11...
[INFO] checking cdumay_error_json-0.1.11 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate cdumay_error_json 0.1.11 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate cdumay_error_json 0.1.11
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate cdumay_error_json 0.1.11
[INFO] tweaked toml for crates.io crate cdumay_error_json 0.1.11 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate cdumay_error_json 0.1.11 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cdumay_error_json 0.1.11 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cdumay_core v0.1.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a7ccaa78b90ac641b7d8cac768cf92ce8b8e6f7b53bb8a5373a7cf854b79238
[INFO] running `Command { std: "docker" "start" "-a" "3a7ccaa78b90ac641b7d8cac768cf92ce8b8e6f7b53bb8a5373a7cf854b79238", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a7ccaa78b90ac641b7d8cac768cf92ce8b8e6f7b53bb8a5373a7cf854b79238", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a7ccaa78b90ac641b7d8cac768cf92ce8b8e6f7b53bb8a5373a7cf854b79238", kill_on_drop: false }`
[INFO] [stdout] 3a7ccaa78b90ac641b7d8cac768cf92ce8b8e6f7b53bb8a5373a7cf854b79238
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94fcc97155440e935534eb74a17f790c22353bf91509e54333810d7fe7cf19bc
[INFO] running `Command { std: "docker" "start" "-a" "94fcc97155440e935534eb74a17f790c22353bf91509e54333810d7fe7cf19bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]     Checking ordered-float v2.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking serde-value v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking cdumay_core v0.1.6
[INFO] [stderr]     Checking cdumay_error_json v0.1.11 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `key` is never read
[INFO] [stdout]   --> tests/test_json_error.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 27 |     struct MyStruct {
[INFO] [stdout]    |            -------- field in this struct
[INFO] [stdout] 28 |         key: String,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `MyStruct` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.44s
[INFO] running `Command { std: "docker" "inspect" "94fcc97155440e935534eb74a17f790c22353bf91509e54333810d7fe7cf19bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94fcc97155440e935534eb74a17f790c22353bf91509e54333810d7fe7cf19bc", kill_on_drop: false }`
[INFO] [stdout] 94fcc97155440e935534eb74a17f790c22353bf91509e54333810d7fe7cf19bc