[INFO] fetching crate fastnbt 2.5.0... [INFO] checking fastnbt-2.5.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170 [INFO] extracting crate fastnbt 2.5.0 into /workspace/builds/worker-3-tc2/source [INFO] started tweaking crates.io crate fastnbt 2.5.0 [INFO] finished tweaking crates.io crate fastnbt 2.5.0 [INFO] tweaked toml for crates.io crate fastnbt 2.5.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate fastnbt 2.5.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate fastnbt 2.5.0 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] df25f7fd6cd9e4f60ffd7915e11f3f151f476aff13b290cb0f0b4933d5233093 [INFO] running `Command { std: "docker" "start" "-a" "df25f7fd6cd9e4f60ffd7915e11f3f151f476aff13b290cb0f0b4933d5233093", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "df25f7fd6cd9e4f60ffd7915e11f3f151f476aff13b290cb0f0b4933d5233093", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "df25f7fd6cd9e4f60ffd7915e11f3f151f476aff13b290cb0f0b4933d5233093", kill_on_drop: false }` [INFO] [stdout] df25f7fd6cd9e4f60ffd7915e11f3f151f476aff13b290cb0f0b4933d5233093 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3227239f18cb96fee3a8f28d58b7ceccea51dd7ec8d61c4fc3163eff957cc95e [INFO] running `Command { std: "docker" "start" "-a" "3227239f18cb96fee3a8f28d58b7ceccea51dd7ec8d61c4fc3163eff957cc95e", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.67 [INFO] [stderr] Compiling unicode-ident v1.0.12 [INFO] [stderr] Compiling serde v1.0.188 [INFO] [stderr] Compiling crc32fast v1.3.2 [INFO] [stderr] Checking adler v1.0.2 [INFO] [stderr] Compiling serde_json v1.0.107 [INFO] [stderr] Checking ryu v1.0.15 [INFO] [stderr] Checking cesu8 v1.1.0 [INFO] [stderr] Checking miniz_oxide v0.7.1 [INFO] [stderr] Checking itoa v1.0.9 [INFO] [stderr] Checking byteorder v1.4.3 [INFO] [stderr] Checking flate2 v1.0.27 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling syn v2.0.37 [INFO] [stderr] Compiling serde_derive v1.0.188 [INFO] [stderr] Checking serde_bytes v0.11.12 [INFO] [stderr] Checking fastnbt v2.5.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `ser` is never read [INFO] [stdout] --> src/value/array_serializer.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct ArraySerializer<'a> { [INFO] [stdout] | --------------- field in this struct [INFO] [stdout] 11 | pub ser: &'a mut Serializer, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/value/de.rs:882:19 [INFO] [stdout] | [INFO] [stdout] 882 | fn unexpected(&self) -> Unexpected { [INFO] [stdout] | ^^^^^ ---------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 882 | fn unexpected(&self) -> Unexpected<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `serde_json::to_writer` [INFO] [stdout] --> src/test/ser.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | use serde_json::to_writer; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `ser` is never read [INFO] [stdout] --> src/value/array_serializer.rs:11:9 [INFO] [stdout] | [INFO] [stdout] 10 | pub struct ArraySerializer<'a> { [INFO] [stdout] | --------------- field in this struct [INFO] [stdout] 11 | pub ser: &'a mut Serializer, [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/test/minecraft_chunk.rs:68:15 [INFO] [stdout] | [INFO] [stdout] 68 | Known(KnownEntity), [INFO] [stdout] | ----- ^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Entity` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 68 - Known(KnownEntity), [INFO] [stdout] 68 + Known(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> src/test/minecraft_chunk.rs:69:17 [INFO] [stdout] | [INFO] [stdout] 69 | Unknown(Value), [INFO] [stdout] | ------- ^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Entity` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field [INFO] [stdout] | [INFO] [stdout] 69 - Unknown(Value), [INFO] [stdout] 69 + Unknown(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `block_states` is never read [INFO] [stdout] --> src/test/minecraft_chunk.rs:115:13 [INFO] [stdout] | [INFO] [stdout] 113 | pub struct Section<'a> { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 114 | #[serde(borrow)] [INFO] [stdout] 115 | pub block_states: Option<&'a [u8]>, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Section` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> src/value/de.rs:882:19 [INFO] [stdout] | [INFO] [stdout] 882 | fn unexpected(&self) -> Unexpected { [INFO] [stdout] | ^^^^^ ---------- the lifetime gets resolved as `'_` [INFO] [stdout] | | [INFO] [stdout] | this lifetime flows to the output [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths [INFO] [stdout] | [INFO] [stdout] 882 | fn unexpected(&self) -> Unexpected<'_> { [INFO] [stdout] | ++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.64s [INFO] running `Command { std: "docker" "inspect" "3227239f18cb96fee3a8f28d58b7ceccea51dd7ec8d61c4fc3163eff957cc95e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3227239f18cb96fee3a8f28d58b7ceccea51dd7ec8d61c4fc3163eff957cc95e", kill_on_drop: false }` [INFO] [stdout] 3227239f18cb96fee3a8f28d58b7ceccea51dd7ec8d61c4fc3163eff957cc95e