[INFO] fetching crate csv-stream 0.1.3...
[INFO] checking csv-stream-0.1.3 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate csv-stream 0.1.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate csv-stream 0.1.3 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate csv-stream 0.1.3
[INFO] finished tweaking crates.io crate csv-stream 0.1.3
[INFO] tweaked toml for crates.io crate csv-stream 0.1.3 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 73 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding bstr v0.2.17 (latest: v1.9.1)
[INFO] [stderr]       Adding itoa v0.4.8 (latest: v1.0.11)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding regex-automata v0.1.10 (latest: v0.4.6)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6927d98aa4b4d60f8857abb715253473f2c39cd3b5f34ba1b1cb6ed03344139c
[INFO] running `Command { std: "docker" "start" "-a" "6927d98aa4b4d60f8857abb715253473f2c39cd3b5f34ba1b1cb6ed03344139c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6927d98aa4b4d60f8857abb715253473f2c39cd3b5f34ba1b1cb6ed03344139c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6927d98aa4b4d60f8857abb715253473f2c39cd3b5f34ba1b1cb6ed03344139c", kill_on_drop: false }`
[INFO] [stdout] 6927d98aa4b4d60f8857abb715253473f2c39cd3b5f34ba1b1cb6ed03344139c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d243f7686d6ad6fd4e7d424f235a260307c1dc9adb299f464e835489e00ec5ef
[INFO] running `Command { std: "docker" "start" "-a" "d243f7686d6ad6fd4e7d424f235a260307c1dc9adb299f464e835489e00ec5ef", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking csv-stream v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `csv_core` is imported redundantly
[INFO] [stdout]  --> src/writer.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use csv_core::{self, WriteResult, Writer as CoreWriter, WriterBuilder as CoreWriterBuilder};
[INFO] [stdout]   |                ^^^^ the item `csv_core` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `csv_core` is imported redundantly
[INFO] [stdout]  --> src/writer.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use csv_core::{self, WriteResult, Writer as CoreWriter, WriterBuilder as CoreWriterBuilder};
[INFO] [stdout]   |                ^^^^ the item `csv_core` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `capacity` is never read
[INFO] [stdout]   --> src/writer.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct WriterBuilder {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 15 |     builder: CoreWriterBuilder,
[INFO] [stdout] 16 |     capacity: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WriterBuilder` 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] [stdout] warning: field `panicked` is never read
[INFO] [stdout]    --> src/writer.rs:532:5
[INFO] [stdout]     |
[INFO] [stdout] 517 | struct WriterState {
[INFO] [stdout]     |        ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 532 |     panicked: bool,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `WriterState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `capacity` is never read
[INFO] [stdout]   --> src/writer.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub struct WriterBuilder {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 15 |     builder: CoreWriterBuilder,
[INFO] [stdout] 16 |     capacity: usize,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WriterBuilder` 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] [stdout] warning: field `panicked` is never read
[INFO] [stdout]    --> src/writer.rs:532:5
[INFO] [stdout]     |
[INFO] [stdout] 517 | struct WriterState {
[INFO] [stdout]     |        ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 532 |     panicked: bool,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `WriterState` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.85s
[INFO] running `Command { std: "docker" "inspect" "d243f7686d6ad6fd4e7d424f235a260307c1dc9adb299f464e835489e00ec5ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d243f7686d6ad6fd4e7d424f235a260307c1dc9adb299f464e835489e00ec5ef", kill_on_drop: false }`
[INFO] [stdout] d243f7686d6ad6fd4e7d424f235a260307c1dc9adb299f464e835489e00ec5ef