[INFO] fetching crate roundabout 0.2.0... [INFO] checking roundabout-0.2.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate roundabout 0.2.0 into /workspace/builds/worker-6-tc1/source [INFO] validating manifest of crates.io crate roundabout 0.2.0 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 roundabout 0.2.0 [INFO] finished tweaking crates.io crate roundabout 0.2.0 [INFO] tweaked toml for crates.io crate roundabout 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate crates.io crate roundabout 0.2.0 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] Downloading crates ... [INFO] [stderr] Downloaded cast v0.2.6 [INFO] [stderr] Downloaded ctrlc v3.1.9 [INFO] [stderr] Downloaded ahash v0.7.4 [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] 5add58838ce3c1aef489c5cf04cba9e5bce0a1e708fe2c242da98238e99ed3b2 [INFO] running `Command { std: "docker" "start" "-a" "5add58838ce3c1aef489c5cf04cba9e5bce0a1e708fe2c242da98238e99ed3b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5add58838ce3c1aef489c5cf04cba9e5bce0a1e708fe2c242da98238e99ed3b2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5add58838ce3c1aef489c5cf04cba9e5bce0a1e708fe2c242da98238e99ed3b2", kill_on_drop: false }` [INFO] [stdout] 5add58838ce3c1aef489c5cf04cba9e5bce0a1e708fe2c242da98238e99ed3b2 [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] dedf20aa9d2fd50ee2c24c42890bb37772dbb957feb7f8ca9ed21665825c0cb6 [INFO] running `Command { std: "docker" "start" "-a" "dedf20aa9d2fd50ee2c24c42890bb37772dbb957feb7f8ca9ed21665825c0cb6", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.97 [INFO] [stderr] Compiling ucd-trie v0.1.3 [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling memoffset v0.6.4 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling crossbeam-epoch v0.9.5 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Checking itoa v0.4.7 [INFO] [stderr] Compiling syn v1.0.73 [INFO] [stderr] Compiling serde_json v1.0.64 [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Checking instant v0.1.9 [INFO] [stderr] Compiling pest v2.1.3 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling indexmap v1.6.2 [INFO] [stderr] Compiling anyhow v1.0.42 [INFO] [stderr] Checking plotters-backend v0.3.0 [INFO] [stderr] Checking unicode-width v0.1.8 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Checking regex-automata v0.1.10 [INFO] [stderr] Checking smallvec v1.6.1 [INFO] [stderr] Compiling ahash v0.7.4 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking crossbeam-channel v0.5.1 [INFO] [stderr] Checking plotters-svg v0.3.0 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Checking lock_api v0.4.4 [INFO] [stderr] Checking once_cell v1.8.0 [INFO] [stderr] Checking half v1.7.1 [INFO] [stderr] Checking hashbrown v0.9.1 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking csv-core v0.1.10 [INFO] [stderr] Checking walkdir v2.3.2 [INFO] [stderr] Checking crossbeam-deque v0.8.0 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking itertools v0.10.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking oorandom v11.1.3 [INFO] [stderr] Compiling semver-parser v0.10.2 [INFO] [stderr] Checking plotters v0.3.1 [INFO] [stderr] Compiling semver v0.11.0 [INFO] [stderr] Compiling rustc_version v0.3.3 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking parking_lot_core v0.8.3 [INFO] [stderr] Checking nix v0.20.0 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Compiling cast v0.2.6 [INFO] [stderr] Checking core_affinity v0.5.10 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Checking roundabout v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: type alias `HashSet` is never used [INFO] [stdout] --> src/util.rs:7:10 [INFO] [stdout] | [INFO] [stdout] 7 | pub type HashSet = std::collections::HashSet; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias `IndexMap` is never used [INFO] [stdout] --> src/util.rs:8:10 [INFO] [stdout] | [INFO] [stdout] 8 | pub type IndexMap = indexmap::map::IndexMap; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new_fn` is never used [INFO] [stdout] --> src/util/triple.rs:30:12 [INFO] [stdout] | [INFO] [stdout] 14 | impl TripleBuffered { [INFO] [stdout] | ------------------------------- associated function in this implementation [INFO] [stdout] ... [INFO] [stdout] 30 | pub fn new_fn T>(factory: F) -> (TripleBufferedHead, TripleBufferedTail) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new_default` is never used [INFO] [stdout] --> src/util/triple.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 47 | impl TripleBuffered { [INFO] [stdout] | ----------------------------------------- associated function in this implementation [INFO] [stdout] 48 | #[inline] [INFO] [stdout] 49 | pub fn new_default() -> (TripleBufferedHead, TripleBufferedTail) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new_clone` is never used [INFO] [stdout] --> src/util/triple.rs:56:12 [INFO] [stdout] | [INFO] [stdout] 54 | impl TripleBuffered { [INFO] [stdout] | --------------------------------------- associated function in this implementation [INFO] [stdout] 55 | #[inline] [INFO] [stdout] 56 | pub fn new_clone(initial: T) -> (TripleBufferedHead, TripleBufferedTail) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking criterion-plot v0.4.3 [INFO] [stderr] Checking bstr v0.2.16 [INFO] [stderr] Checking serde_cbor v0.11.1 [INFO] [stderr] Checking csv v1.1.6 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking ctrlc v3.1.9 [INFO] [stderr] Checking criterion v0.3.4 [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/ping_pong_sequential.rs:4:22 [INFO] [stdout] | [INFO] [stdout] 4 | pub struct PingEvent(u64); [INFO] [stdout] | --------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `PingEvent` 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] 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] 4 | pub struct PingEvent(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/ping_pong_sequential.rs:7:22 [INFO] [stdout] | [INFO] [stdout] 7 | pub struct PongEvent(u64); [INFO] [stdout] | --------- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `PongEvent` 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] 7 | pub struct PongEvent(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> benches/message_bus_bench.rs:6:13 [INFO] [stdout] | [INFO] [stdout] 6 | struct Ping(u64); [INFO] [stdout] | ---- ^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [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] 6 | struct Ping(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> benches/message_bus_bench.rs:7:13 [INFO] [stdout] | [INFO] [stdout] 7 | struct Stop(bool); [INFO] [stdout] | ---- ^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this struct [INFO] [stdout] | [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] 7 | struct Stop(()); [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias `HashSet` is never used [INFO] [stdout] --> src/util.rs:7:10 [INFO] [stdout] | [INFO] [stdout] 7 | pub type HashSet = std::collections::HashSet; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: type alias `IndexMap` is never used [INFO] [stdout] --> src/util.rs:8:10 [INFO] [stdout] | [INFO] [stdout] 8 | pub type IndexMap = indexmap::map::IndexMap; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new_fn` is never used [INFO] [stdout] --> src/util/triple.rs:30:12 [INFO] [stdout] | [INFO] [stdout] 14 | impl TripleBuffered { [INFO] [stdout] | ------------------------------- associated function in this implementation [INFO] [stdout] ... [INFO] [stdout] 30 | pub fn new_fn T>(factory: F) -> (TripleBufferedHead, TripleBufferedTail) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new_default` is never used [INFO] [stdout] --> src/util/triple.rs:49:12 [INFO] [stdout] | [INFO] [stdout] 47 | impl TripleBuffered { [INFO] [stdout] | ----------------------------------------- associated function in this implementation [INFO] [stdout] 48 | #[inline] [INFO] [stdout] 49 | pub fn new_default() -> (TripleBufferedHead, TripleBufferedTail) { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new_clone` is never used [INFO] [stdout] --> src/util/triple.rs:56:12 [INFO] [stdout] | [INFO] [stdout] 54 | impl TripleBuffered { [INFO] [stdout] | --------------------------------------- associated function in this implementation [INFO] [stdout] 55 | #[inline] [INFO] [stdout] 56 | pub fn new_clone(initial: T) -> (TripleBufferedHead, TripleBufferedTail) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.45s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.4 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2` [INFO] running `Command { std: "docker" "inspect" "dedf20aa9d2fd50ee2c24c42890bb37772dbb957feb7f8ca9ed21665825c0cb6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dedf20aa9d2fd50ee2c24c42890bb37772dbb957feb7f8ca9ed21665825c0cb6", kill_on_drop: false }` [INFO] [stdout] dedf20aa9d2fd50ee2c24c42890bb37772dbb957feb7f8ca9ed21665825c0cb6