[INFO] fetching crate disco 0.1.0... [INFO] checking disco-0.1.0 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1 [INFO] extracting crate disco 0.1.0 into /workspace/builds/worker-3-tc1/source [INFO] validating manifest of crates.io crate disco 0.1.0 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate disco 0.1.0 [INFO] finished tweaking crates.io crate disco 0.1.0 [INFO] tweaked toml for crates.io crate disco 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml [INFO] crate crates.io crate disco 0.1.0 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded zeroize_derive v1.0.0 [INFO] [stderr] Downloaded strobe-rs v0.5.2 [INFO] [stderr] Downloaded clear_on_drop v0.2.3 [INFO] [stderr] Downloaded ed25519-dalek v1.0.0-pre.3 [INFO] [stderr] Downloaded c2-chacha v0.2.3 [INFO] [stderr] Downloaded proc-macro2 v1.0.8 [INFO] [stderr] Downloaded syn v1.0.15 [INFO] [stderr] Downloaded x25519-dalek v0.6.0 [INFO] [stderr] Downloaded tiny-keccak v1.5.0 [INFO] [stderr] Downloaded subtle v2.2.2 [INFO] [stderr] Downloaded curve25519-dalek v2.0.0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c704b8989ee87ee4f4356135a9d49dc7ca10bcf63af9d32d6ddcf31c41e7cc7b [INFO] running `Command { std: "docker" "start" "-a" "c704b8989ee87ee4f4356135a9d49dc7ca10bcf63af9d32d6ddcf31c41e7cc7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c704b8989ee87ee4f4356135a9d49dc7ca10bcf63af9d32d6ddcf31c41e7cc7b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c704b8989ee87ee4f4356135a9d49dc7ca10bcf63af9d32d6ddcf31c41e7cc7b", kill_on_drop: false }` [INFO] [stdout] c704b8989ee87ee4f4356135a9d49dc7ca10bcf63af9d32d6ddcf31c41e7cc7b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fe43d31bdf4c430258cfa2381ed17d8e06fc0ded05d0d7c7fa7df395c07e404f [INFO] running `Command { std: "docker" "start" "-a" "fe43d31bdf4c430258cfa2381ed17d8e06fc0ded05d0d7c7fa7df395c07e404f", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling typenum v1.11.2 [INFO] [stderr] Compiling libc v0.2.67 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling syn v1.0.15 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking subtle v2.2.2 [INFO] [stderr] Compiling crunchy v0.2.2 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Checking byte-tools v0.3.1 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking block-padding v0.1.5 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking opaque-debug v0.2.3 [INFO] [stderr] Checking fake-simd v0.1.2 [INFO] [stderr] Checking tiny-keccak v1.5.0 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking strobe-rs v0.5.2 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling clear_on_drop v0.2.3 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking generic-array v0.12.3 [INFO] [stderr] Checking digest v0.8.1 [INFO] [stderr] Checking block-buffer v0.7.3 [INFO] [stderr] Checking sha2 v0.8.1 [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Compiling zeroize_derive v1.0.0 [INFO] [stderr] Checking zeroize v1.1.0 [INFO] [stderr] Checking curve25519-dalek v2.0.0 [INFO] [stderr] Checking x25519-dalek v0.6.0 [INFO] [stderr] Checking ed25519-dalek v1.0.0-pre.3 [INFO] [stderr] Checking disco v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/tcp.rs:7:11 [INFO] [stdout] | [INFO] [stdout] 7 | Disco(ReadError), [INFO] [stdout] | ----- ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Error` 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] 7 | Disco(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/tcp.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | Io(IoError), [INFO] [stdout] | -- ^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Error` 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] 8 | Io(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/tcp.rs:9:11 [INFO] [stdout] | [INFO] [stdout] 9 | Parse(std::str::Utf8Error), [INFO] [stdout] | ----- ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Error` 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] 9 | Parse(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.75s [INFO] running `Command { std: "docker" "inspect" "fe43d31bdf4c430258cfa2381ed17d8e06fc0ded05d0d7c7fa7df395c07e404f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fe43d31bdf4c430258cfa2381ed17d8e06fc0ded05d0d7c7fa7df395c07e404f", kill_on_drop: false }` [INFO] [stdout] fe43d31bdf4c430258cfa2381ed17d8e06fc0ded05d0d7c7fa7df395c07e404f [INFO] checking disco-0.1.0 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1 [INFO] extracting crate disco 0.1.0 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate disco 0.1.0 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate disco 0.1.0 [INFO] finished tweaking crates.io crate disco 0.1.0 [INFO] tweaked toml for crates.io crate disco 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] crate crates.io crate disco 0.1.0 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" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 94ef780aa00238183f25f3c136abd67d62416f6ab234b1dca4d0bb9e5a709b2d [INFO] running `Command { std: "docker" "start" "-a" "94ef780aa00238183f25f3c136abd67d62416f6ab234b1dca4d0bb9e5a709b2d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "94ef780aa00238183f25f3c136abd67d62416f6ab234b1dca4d0bb9e5a709b2d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "94ef780aa00238183f25f3c136abd67d62416f6ab234b1dca4d0bb9e5a709b2d", kill_on_drop: false }` [INFO] [stdout] 94ef780aa00238183f25f3c136abd67d62416f6ab234b1dca4d0bb9e5a709b2d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4cbde2fcc476cda65dba9b47c2f15c3118531e784f97b46015ce8cc8bacb1fa5 [INFO] running `Command { std: "docker" "start" "-a" "4cbde2fcc476cda65dba9b47c2f15c3118531e784f97b46015ce8cc8bacb1fa5", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling libc v0.2.67 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling typenum v1.11.2 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling syn v1.0.15 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Checking subtle v2.2.2 [INFO] [stderr] Checking byte-tools v0.3.1 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling crunchy v0.2.2 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking block-padding v0.1.5 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking opaque-debug v0.2.3 [INFO] [stderr] Checking fake-simd v0.1.2 [INFO] [stderr] Checking tiny-keccak v1.5.0 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking strobe-rs v0.5.2 [INFO] [stderr] Compiling clear_on_drop v0.2.3 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Checking generic-array v0.12.3 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking digest v0.8.1 [INFO] [stderr] Checking block-buffer v0.7.3 [INFO] [stderr] Checking rand v0.7.3 [INFO] [stderr] Checking sha2 v0.8.1 [INFO] [stderr] Compiling synstructure v0.12.3 [INFO] [stderr] Compiling zeroize_derive v1.0.0 [INFO] [stderr] Checking zeroize v1.1.0 [INFO] [stderr] Checking curve25519-dalek v2.0.0 [INFO] [stderr] Checking x25519-dalek v0.6.0 [INFO] [stderr] Checking ed25519-dalek v1.0.0-pre.3 [INFO] [stderr] Checking disco v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/tcp.rs:7:11 [INFO] [stdout] | [INFO] [stdout] 7 | Disco(ReadError), [INFO] [stdout] | ----- ^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Error` 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] 7 | Disco(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/tcp.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | Io(IoError), [INFO] [stdout] | -- ^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Error` 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] 8 | Io(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `0` is never read [INFO] [stdout] --> examples/tcp.rs:9:11 [INFO] [stdout] | [INFO] [stdout] 9 | Parse(std::str::Utf8Error), [INFO] [stdout] | ----- ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | field in this variant [INFO] [stdout] | [INFO] [stdout] = note: `Error` 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] 9 | Parse(()), [INFO] [stdout] | ~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.71s [INFO] running `Command { std: "docker" "inspect" "4cbde2fcc476cda65dba9b47c2f15c3118531e784f97b46015ce8cc8bacb1fa5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4cbde2fcc476cda65dba9b47c2f15c3118531e784f97b46015ce8cc8bacb1fa5", kill_on_drop: false }` [INFO] [stdout] 4cbde2fcc476cda65dba9b47c2f15c3118531e784f97b46015ce8cc8bacb1fa5