[INFO] fetching crate prometheus-client-derive-text-encode 0.3.0...
[INFO] building prometheus-client-derive-text-encode-0.3.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate prometheus-client-derive-text-encode 0.3.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate prometheus-client-derive-text-encode 0.3.0
[INFO] finished tweaking crates.io crate prometheus-client-derive-text-encode 0.3.0
[INFO] tweaked toml for crates.io crate prometheus-client-derive-text-encode 0.3.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate prometheus-client-derive-text-encode 0.3.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c9f55e9e368c8b0f4b386e120460ea130a90a2dcc7c0f9fadbdc19634ad94b1e
[INFO] running `Command { std: "docker" "start" "-a" "c9f55e9e368c8b0f4b386e120460ea130a90a2dcc7c0f9fadbdc19634ad94b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c9f55e9e368c8b0f4b386e120460ea130a90a2dcc7c0f9fadbdc19634ad94b1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9f55e9e368c8b0f4b386e120460ea130a90a2dcc7c0f9fadbdc19634ad94b1e", kill_on_drop: false }`
[INFO] [stdout] c9f55e9e368c8b0f4b386e120460ea130a90a2dcc7c0f9fadbdc19634ad94b1e
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe503edc3f09947b6700ed9e938ef553fc3a49e6fe47a12c9418e05cc53f8c24
[INFO] running `Command { std: "docker" "start" "-a" "fe503edc3f09947b6700ed9e938ef553fc3a49e6fe47a12c9418e05cc53f8c24", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling prometheus-client-derive-text-encode v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.43s
[INFO] running `Command { std: "docker" "inspect" "fe503edc3f09947b6700ed9e938ef553fc3a49e6fe47a12c9418e05cc53f8c24", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe503edc3f09947b6700ed9e938ef553fc3a49e6fe47a12c9418e05cc53f8c24", kill_on_drop: false }`
[INFO] [stdout] fe503edc3f09947b6700ed9e938ef553fc3a49e6fe47a12c9418e05cc53f8c24
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41ec7995b49b444bb82f3f4ebf7fea5e5c7f13aae0fd021e5cc7a3438bdac343
[INFO] running `Command { std: "docker" "start" "-a" "41ec7995b49b444bb82f3f4ebf7fea5e5c7f13aae0fd021e5cc7a3438bdac343", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling prometheus-client-derive-text-encode v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `prometheus_client`
[INFO] [stdout]  --> tests/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use prometheus_client::encoding::text::{encode, Encode};
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `prometheus_client`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `prometheus_client`, use `cargo add prometheus_client` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `prometheus_client`
[INFO] [stdout]  --> tests/lib.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use prometheus_client::metrics::counter::Counter;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `prometheus_client`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `prometheus_client`, use `cargo add prometheus_client` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `prometheus_client`
[INFO] [stdout]  --> tests/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use prometheus_client::metrics::family::Family;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `prometheus_client`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `prometheus_client`, use `cargo add prometheus_client` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of unresolved module or unlinked crate `prometheus_client`
[INFO] [stdout]  --> tests/lib.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use prometheus_client::registry::Registry;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ use of unresolved module or unlinked crate `prometheus_client`
[INFO] [stdout]   |
[INFO] [stdout]   = help: if you wanted to use a crate named `prometheus_client`, use `cargo add prometheus_client` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `encode` found for struct `remap_keyword_identifiers::Labels` in the current scope
[INFO] [stdout]   --> tests/lib.rs:61:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     struct Labels {
[INFO] [stdout]    |     ------------- method `encode` not found for this struct
[INFO] [stdout] ...
[INFO] [stdout] 61 |     labels.encode(&mut buffer).unwrap();
[INFO] [stdout]    |            ^^^^^^ method not found in `remap_keyword_identifiers::Labels`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0433, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `prometheus-client-derive-text-encode` (test "lib") due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "41ec7995b49b444bb82f3f4ebf7fea5e5c7f13aae0fd021e5cc7a3438bdac343", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41ec7995b49b444bb82f3f4ebf7fea5e5c7f13aae0fd021e5cc7a3438bdac343", kill_on_drop: false }`
[INFO] [stdout] 41ec7995b49b444bb82f3f4ebf7fea5e5c7f13aae0fd021e5cc7a3438bdac343