[INFO] fetching crate rustygear 0.9.0...
[INFO] checking rustygear-0.9.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate rustygear 0.9.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate rustygear 0.9.0 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 rustygear 0.9.0
[INFO] finished tweaking crates.io crate rustygear 0.9.0
[INFO] tweaked toml for crates.io crate rustygear 0.9.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate rustygear 0.9.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hash_ring v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a5e4616c14a6905f915e66dcbe93ec81419e359d42d18d6fe094a57e973bf0f9
[INFO] running `Command { std: "docker" "start" "-a" "a5e4616c14a6905f915e66dcbe93ec81419e359d42d18d6fe094a57e973bf0f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5e4616c14a6905f915e66dcbe93ec81419e359d42d18d6fe094a57e973bf0f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5e4616c14a6905f915e66dcbe93ec81419e359d42d18d6fe094a57e973bf0f9", kill_on_drop: false }`
[INFO] [stdout] a5e4616c14a6905f915e66dcbe93ec81419e359d42d18d6fe094a57e973bf0f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] f7687dc353b3808b2505dd85e0c28df3877f0c35324ab27494cca3b7fbc6dfcb
[INFO] running `Command { std: "docker" "start" "-a" "f7687dc353b3808b2505dd85e0c28df3877f0c35324ab27494cca3b7fbc6dfcb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking mio v0.8.3
[INFO] [stderr]     Checking num_cpus v1.13.1
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[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.3
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[INFO] [stderr]     Checking parking_lot v0.12.1
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[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]     Checking twox-hash v1.6.3
[INFO] [stderr]     Checking hash_ring v0.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]     Checking tokio v1.18.2
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking rustygear v0.9.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `handle`, `known`, `running`, `numerator`, and `denominator` are never read
[INFO] [stdout]   --> src/client.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct JobStatus {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 42 |     handle: Bytes,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 43 |     known: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 44 |     running: bool,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 45 |     numerator: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 46 |     denominator: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JobStatus` 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: fields `handle`, `known`, `running`, `numerator`, and `denominator` are never read
[INFO] [stdout]   --> src/client.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct JobStatus {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] 42 |     handle: Bytes,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 43 |     known: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 44 |     running: bool,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 45 |     numerator: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 46 |     denominator: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `JobStatus` 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: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/client.rs:359:30
[INFO] [stdout]     |
[INFO] [stdout] 359 |         let payload = payload.clone();
[INFO] [stdout]     |                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/client.rs:359:30
[INFO] [stdout]     |
[INFO] [stdout] 359 |         let payload = payload.clone();
[INFO] [stdout]     |                              ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.72s
[INFO] running `Command { std: "docker" "inspect" "f7687dc353b3808b2505dd85e0c28df3877f0c35324ab27494cca3b7fbc6dfcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7687dc353b3808b2505dd85e0c28df3877f0c35324ab27494cca3b7fbc6dfcb", kill_on_drop: false }`
[INFO] [stdout] f7687dc353b3808b2505dd85e0c28df3877f0c35324ab27494cca3b7fbc6dfcb