[INFO] cloning repository https://github.com/walfie/rs-streams-test [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/walfie/rs-streams-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalfie%2Frs-streams-test", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalfie%2Frs-streams-test'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1bf0ab52883491bdbc7197f348862811bf024f5b [INFO] checking walfie/rs-streams-test against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalfie%2Frs-streams-test" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/walfie/rs-streams-test 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 git repo https://github.com/walfie/rs-streams-test [INFO] finished tweaking git repo https://github.com/walfie/rs-streams-test [INFO] tweaked toml for git repo https://github.com/walfie/rs-streams-test written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/walfie/rs-streams-test 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 tokio-io v0.1.1 [INFO] [stderr] Downloaded mio v0.6.7 [INFO] [stderr] Downloaded bytes v0.4.3 [INFO] [stderr] Downloaded futures v0.1.13 [INFO] [stderr] Downloaded tokio-core v0.1.7 [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] dbff472822f92a8693a2bf6627c09a03756a7654be2e47a2abf3487f8b74451a [INFO] running `Command { std: "docker" "start" "-a" "dbff472822f92a8693a2bf6627c09a03756a7654be2e47a2abf3487f8b74451a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "dbff472822f92a8693a2bf6627c09a03756a7654be2e47a2abf3487f8b74451a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dbff472822f92a8693a2bf6627c09a03756a7654be2e47a2abf3487f8b74451a", kill_on_drop: false }` [INFO] [stdout] dbff472822f92a8693a2bf6627c09a03756a7654be2e47a2abf3487f8b74451a [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] 0505aedeac46d3e08343e2156028755edc5e5487bd7e8e81a890d44545023046 [INFO] running `Command { std: "docker" "start" "-a" "0505aedeac46d3e08343e2156028755edc5e5487bd7e8e81a890d44545023046", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.22 [INFO] [stderr] Checking log v0.3.7 [INFO] [stderr] Checking cfg-if v0.1.0 [INFO] [stderr] Checking byteorder v1.0.0 [INFO] [stderr] Checking slab v0.3.0 [INFO] [stderr] Checking lazycell v0.4.0 [INFO] [stderr] Checking futures v0.1.13 [INFO] [stderr] Checking scoped-tls v0.1.0 [INFO] [stderr] Checking iovec v0.1.0 [INFO] [stderr] Checking net2 v0.2.29 [INFO] [stderr] Checking bytes v0.4.3 [INFO] [stderr] Checking mio v0.6.7 [INFO] [stderr] Checking tokio-io v0.1.1 [INFO] [stderr] Checking tokio-core v0.1.7 [INFO] [stderr] Checking streams v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Drop` is imported redundantly [INFO] [stdout] --> src/broadcast.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::ops::Drop; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Drop` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Drop` is imported redundantly [INFO] [stdout] --> src/broadcast.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::ops::Drop; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Drop` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `futures` is imported redundantly [INFO] [stdout] --> src/broadcast.rs:163:19 [INFO] [stdout] | [INFO] [stdout] 163 | use futures::{self, Future, Stream}; [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] ::: src/main.rs:2:1 [INFO] [stdout] | [INFO] [stdout] 2 | extern crate futures; [INFO] [stdout] | --------------------- the item `futures` is already imported here [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Future` is imported redundantly [INFO] [stdout] --> src/broadcast.rs:163:25 [INFO] [stdout] | [INFO] [stdout] 162 | use super::*; [INFO] [stdout] | -------- the item `Future` is already imported here [INFO] [stdout] 163 | use futures::{self, Future, Stream}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Stream` is imported redundantly [INFO] [stdout] --> src/broadcast.rs:163:33 [INFO] [stdout] | [INFO] [stdout] 162 | use super::*; [INFO] [stdout] | -------- the item `Stream` is already imported here [INFO] [stdout] 163 | use futures::{self, Future, Stream}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `text` is never read [INFO] [stdout] --> src/main.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 14 | struct Message { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 15 | topic_id: u32, [INFO] [stdout] 16 | text: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Message` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `new` is never used [INFO] [stdout] --> src/broadcast.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | pub fn new(messages: MsgStream) [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `subscribe` is never used [INFO] [stdout] --> src/broadcast.rs:56:8 [INFO] [stdout] | [INFO] [stdout] 51 | / impl SubscriptionManager [INFO] [stdout] 52 | | where [INFO] [stdout] 53 | | SubId: Clone, [INFO] [stdout] | |_________________- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 56 | fn subscribe [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variants `Subscribe` and `Message` are never constructed [INFO] [stdout] --> src/broadcast.rs:110:5 [INFO] [stdout] | [INFO] [stdout] 109 | pub enum Event { [INFO] [stdout] | ----- variants in this enum [INFO] [stdout] 110 | Subscribe { id: SubId, subscriber: Sub }, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] 111 | Unsubscribe(SubId), [INFO] [stdout] 112 | Message(Msg), [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `Backlog` is never constructed [INFO] [stdout] --> src/backlog.rs:4:8 [INFO] [stdout] | [INFO] [stdout] 4 | struct Backlog { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `BacklogSnapshot` is never constructed [INFO] [stdout] --> src/backlog.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 12 | struct BacklogSnapshot { [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `with_capacity`, `insert`, and `snapshot` are never used [INFO] [stdout] --> src/backlog.rs:18:8 [INFO] [stdout] | [INFO] [stdout] 17 | impl Backlog { [INFO] [stdout] | ------------------------- associated items in this implementation [INFO] [stdout] 18 | fn with_capacity(capacity: usize) -> Self { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 32 | fn insert(&mut self, item: T) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 42 | fn snapshot(&self) -> Arc> { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sub` [INFO] [stdout] --> src/broadcast.rs:237:25 [INFO] [stdout] | [INFO] [stdout] 237 | let sub = manager.subscribe(1, tx); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_sub` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `text` is never read [INFO] [stdout] --> src/main.rs:16:5 [INFO] [stdout] | [INFO] [stdout] 14 | struct Message { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] 15 | topic_id: u32, [INFO] [stdout] 16 | text: String, [INFO] [stdout] | ^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Message` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 6 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.97s [INFO] running `Command { std: "docker" "inspect" "0505aedeac46d3e08343e2156028755edc5e5487bd7e8e81a890d44545023046", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0505aedeac46d3e08343e2156028755edc5e5487bd7e8e81a890d44545023046", kill_on_drop: false }` [INFO] [stdout] 0505aedeac46d3e08343e2156028755edc5e5487bd7e8e81a890d44545023046 [INFO] checking walfie/rs-streams-test against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwalfie%2Frs-streams-test" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/walfie/rs-streams-test on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/walfie/rs-streams-test [INFO] finished tweaking git repo https://github.com/walfie/rs-streams-test [INFO] tweaked toml for git repo https://github.com/walfie/rs-streams-test written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/walfie/rs-streams-test 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9f9b9333b21bd16a31867beb3c3044de6e760b2a52a131d5f02553dd8352c0eb [INFO] running `Command { std: "docker" "start" "-a" "9f9b9333b21bd16a31867beb3c3044de6e760b2a52a131d5f02553dd8352c0eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9f9b9333b21bd16a31867beb3c3044de6e760b2a52a131d5f02553dd8352c0eb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9f9b9333b21bd16a31867beb3c3044de6e760b2a52a131d5f02553dd8352c0eb", kill_on_drop: false }` [INFO] [stdout] 9f9b9333b21bd16a31867beb3c3044de6e760b2a52a131d5f02553dd8352c0eb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 85d881011a45e94492526104f095ed869246cc065f99dd1cb5aa2fae7180eafe [INFO] running `Command { std: "docker" "start" "-a" "85d881011a45e94492526104f095ed869246cc065f99dd1cb5aa2fae7180eafe", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.22 [INFO] [stderr] Checking log v0.3.7 [INFO] [stderr] Checking cfg-if v0.1.0 [INFO] [stderr] Checking byteorder v1.0.0 [INFO] [stderr] Checking slab v0.3.0 [INFO] [stderr] Checking futures v0.1.13 [INFO] [stderr] Checking lazycell v0.4.0 [INFO] [stderr] Checking scoped-tls v0.1.0 [INFO] [stderr] Checking iovec v0.1.0 [INFO] [stderr] Checking net2 v0.2.29 [INFO] [stderr] Checking bytes v0.4.3 [INFO] [stderr] Checking mio v0.6.7 [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/bytes-0.4.3/src/bytes.rs:1772:21 [INFO] [stdout] | [INFO] [stdout] 1772 | panic!(); // TODO: abort [INFO] [stdout] | ^^^^^^^^ cannot infer type [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `bytes` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/mio-0.6.7/src/poll.rs:1839:13 [INFO] [stdout] | [INFO] [stdout] 1839 | panic!(); [INFO] [stdout] | ^^^^^^^^ cannot infer type [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `mio` (lib) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "85d881011a45e94492526104f095ed869246cc065f99dd1cb5aa2fae7180eafe", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "85d881011a45e94492526104f095ed869246cc065f99dd1cb5aa2fae7180eafe", kill_on_drop: false }` [INFO] [stdout] 85d881011a45e94492526104f095ed869246cc065f99dd1cb5aa2fae7180eafe