[INFO] cloning repository https://github.com/nathan-at-least/iomux [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nathan-at-least/iomux" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathan-at-least%2Fiomux", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathan-at-least%2Fiomux'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 76fa8d24d4ec8d573471e63acbd1f007eefbdbd4 [INFO] checking nathan-at-least/iomux/76fa8d24d4ec8d573471e63acbd1f007eefbdbd4 against master#f8c27dfe1a2e7fb538fd91dad53de06992c7c967 for pr-138915 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathan-at-least%2Fiomux" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/nathan-at-least/iomux on toolchain f8c27dfe1a2e7fb538fd91dad53de06992c7c967 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8c27dfe1a2e7fb538fd91dad53de06992c7c967" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/nathan-at-least/iomux [INFO] finished tweaking git repo https://github.com/nathan-at-least/iomux [INFO] tweaked toml for git repo https://github.com/nathan-at-least/iomux written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/nathan-at-least/iomux 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" "+f8c27dfe1a2e7fb538fd91dad53de06992c7c967" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tracing v0.1.9 [INFO] [stderr] Downloaded tokio-timer v0.3.0-alpha.6 [INFO] [stderr] Downloaded tokio-macros v0.2.0-alpha.6 [INFO] [stderr] Downloaded tracing-core v0.1.6 [INFO] [stderr] Downloaded derive_more v0.13.0 [INFO] [stderr] Downloaded tokio-fs v0.2.0-alpha.6 [INFO] [stderr] Downloaded bitflags v1.2.0 [INFO] [stderr] Downloaded arc-swap v0.4.8 [INFO] [stderr] Downloaded crossbeam-channel v0.3.9 [INFO] [stderr] Downloaded pin-project v0.4.2 [INFO] [stderr] Downloaded tokio-net v0.2.0-alpha.6 [INFO] [stderr] Downloaded proc-macro2 v1.0.5 [INFO] [stderr] Downloaded tokio v0.2.0-alpha.6 [INFO] [stderr] Downloaded tokio-codec v0.2.0-alpha.6 [INFO] [stderr] Downloaded pin-project-internal v0.4.2 [INFO] [stderr] Downloaded signal-hook-registry v1.1.1 [INFO] [stderr] Downloaded tokio-io v0.2.0-alpha.6 [INFO] [stderr] Downloaded tracing-attributes v0.1.4 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+f8c27dfe1a2e7fb538fd91dad53de06992c7c967" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e0bf0d4e7adc5af588377ab9590459645bc5a2562961f5ca454f84f497dccb95 [INFO] running `Command { std: "docker" "start" "-a" "e0bf0d4e7adc5af588377ab9590459645bc5a2562961f5ca454f84f497dccb95", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e0bf0d4e7adc5af588377ab9590459645bc5a2562961f5ca454f84f497dccb95", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e0bf0d4e7adc5af588377ab9590459645bc5a2562961f5ca454f84f497dccb95", kill_on_drop: false }` [INFO] [stdout] e0bf0d4e7adc5af588377ab9590459645bc5a2562961f5ca454f84f497dccb95 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+f8c27dfe1a2e7fb538fd91dad53de06992c7c967" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 483e1c802c9a90a2518abeb941c8771f99de2c86a648fbe4171ca389c7a2d8a2 [INFO] running `Command { std: "docker" "start" "-a" "483e1c802c9a90a2518abeb941c8771f99de2c86a648fbe4171ca389c7a2d8a2", kill_on_drop: false }` [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling libc v0.2.126 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling proc-macro2 v1.0.5 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Checking spin v0.5.2 [INFO] [stderr] Compiling log v0.4.8 [INFO] [stderr] Checking futures-core-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling arrayvec v0.4.11 [INFO] [stderr] Checking scopeguard v1.0.0 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking futures-sink-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling pin-project-internal v0.4.2 [INFO] [stderr] Checking nodrop v0.1.13 [INFO] [stderr] Compiling byteorder v1.3.2 [INFO] [stderr] Checking pin-utils v0.1.0-alpha.4 [INFO] [stderr] Compiling memchr v2.2.1 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Compiling proc-macro2 v0.4.30 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling unicode-xid v0.1.0 [INFO] [stderr] Checking lock_api v0.3.1 [INFO] [stderr] Checking futures-channel-preview v0.3.0-alpha.19 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking tracing-core v0.1.6 [INFO] [stderr] Checking arc-swap v0.4.8 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking crossbeam-queue v0.1.2 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Checking futures-util-preview v0.3.0-alpha.19 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Compiling memoffset v0.5.1 [INFO] [stderr] Compiling parking_lot_core v0.6.2 [INFO] [stderr] Compiling parking_lot v0.9.0 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling quote v0.6.13 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking num_cpus v1.10.1 [INFO] [stderr] Checking net2 v0.2.37 [INFO] [stderr] Checking signal-hook-registry v1.1.1 [INFO] [stderr] Checking bytes v0.4.12 [INFO] [stderr] Checking crossbeam-deque v0.7.1 [INFO] [stderr] Checking mio v0.6.19 [INFO] [stderr] Checking tokio-sync v0.2.0-alpha.6 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Compiling derive_more v0.13.0 [INFO] [stderr] Compiling tracing-attributes v0.1.4 [INFO] [stderr] Compiling tokio-macros v0.2.0-alpha.6 [INFO] [stderr] Checking tracing v0.1.9 [INFO] [stderr] Checking tokio-executor v0.2.0-alpha.6 [INFO] [stderr] Checking pin-project v0.4.2 [INFO] [stderr] Checking tokio-io v0.2.0-alpha.6 [INFO] [stderr] Checking tokio-codec v0.2.0-alpha.6 [INFO] [stderr] Checking tokio-timer v0.3.0-alpha.6 [INFO] [stderr] Checking tokio-fs v0.2.0-alpha.6 [INFO] [stderr] Checking tokio-net v0.2.0-alpha.6 [INFO] [stderr] Checking tokio v0.2.0-alpha.6 [INFO] [stderr] Checking iomux v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: field `0` is never read [INFO] [stdout] --> src/bin/iomux-testwidget.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | Std(std::io::Error), [INFO] [stdout] | --- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MyError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/bin/iomux-testwidget.rs:1:9 [INFO] [stdout] | [INFO] [stdout] 1 | #![deny(warnings)] [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]` [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] 39 - Std(std::io::Error), [INFO] [stdout] 39 + Std(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: field `0` is never read [INFO] [stdout] --> src/bin/iomux-testwidget.rs:40:11 [INFO] [stdout] | [INFO] [stdout] 40 | Parse(std::num::ParseIntError), [INFO] [stdout] | ----- ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MyError` 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] 40 - Parse(std::num::ParseIntError), [INFO] [stdout] 40 + Parse(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: field `0` is never read [INFO] [stdout] --> src/bin/iomux-testwidget.rs:39:9 [INFO] [stdout] | [INFO] [stdout] 39 | Std(std::io::Error), [INFO] [stdout] | --- ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MyError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/bin/iomux-testwidget.rs:1:9 [INFO] [stdout] | [INFO] [stdout] 1 | #![deny(warnings)] [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]` [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] 39 - Std(std::io::Error), [INFO] [stdout] 39 + Std(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: field `0` is never read [INFO] [stdout] --> src/bin/iomux-testwidget.rs:40:11 [INFO] [stdout] | [INFO] [stdout] 40 | Parse(std::num::ParseIntError), [INFO] [stdout] | ----- ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MyError` 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] 40 - Parse(std::num::ParseIntError), [INFO] [stdout] 40 + Parse(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `iomux` (bin "iomux-testwidget") due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: could not compile `iomux` (bin "iomux-testwidget" test) due to 2 previous errors [INFO] [stdout] error: field `0` is never read [INFO] [stdout] --> src/muxport.rs:37:13 [INFO] [stdout] | [INFO] [stdout] 37 | OutLine(String), [INFO] [stdout] | ------- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MuxStreamItem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/main.rs:1:9 [INFO] [stdout] | [INFO] [stdout] 1 | #![deny(warnings)] [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]` [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] 37 - OutLine(String), [INFO] [stdout] 37 + OutLine(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: field `0` is never read [INFO] [stdout] --> src/muxport.rs:38:13 [INFO] [stdout] | [INFO] [stdout] 38 | ErrLine(String), [INFO] [stdout] | ------- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MuxStreamItem` 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] 38 - ErrLine(String), [INFO] [stdout] 38 + ErrLine(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: field `0` is never read [INFO] [stdout] --> src/muxport.rs:39:12 [INFO] [stdout] | [INFO] [stdout] 39 | Status(ExitStatus), [INFO] [stdout] | ------ ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MuxStreamItem` 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] 39 - Status(ExitStatus), [INFO] [stdout] 39 + Status(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `iomux` (bin "iomux") due to 3 previous errors [INFO] [stdout] error: field `0` is never read [INFO] [stdout] --> src/muxport.rs:37:13 [INFO] [stdout] | [INFO] [stdout] 37 | OutLine(String), [INFO] [stdout] | ------- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MuxStreamItem` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] note: the lint level is defined here [INFO] [stdout] --> src/main.rs:1:9 [INFO] [stdout] | [INFO] [stdout] 1 | #![deny(warnings)] [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]` [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] 37 - OutLine(String), [INFO] [stdout] 37 + OutLine(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: field `0` is never read [INFO] [stdout] --> src/muxport.rs:38:13 [INFO] [stdout] | [INFO] [stdout] 38 | ErrLine(String), [INFO] [stdout] | ------- ^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MuxStreamItem` 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] 38 - ErrLine(String), [INFO] [stdout] 38 + ErrLine(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: field `0` is never read [INFO] [stdout] --> src/muxport.rs:39:12 [INFO] [stdout] | [INFO] [stdout] 39 | Status(ExitStatus), [INFO] [stdout] | ------ ^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `MuxStreamItem` 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] 39 - Status(ExitStatus), [INFO] [stdout] 39 + Status(()), [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `iomux` (bin "iomux" test) due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "483e1c802c9a90a2518abeb941c8771f99de2c86a648fbe4171ca389c7a2d8a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "483e1c802c9a90a2518abeb941c8771f99de2c86a648fbe4171ca389c7a2d8a2", kill_on_drop: false }` [INFO] [stdout] 483e1c802c9a90a2518abeb941c8771f99de2c86a648fbe4171ca389c7a2d8a2