[INFO] fetching crate disco 0.1.0... [INFO] checking disco-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate disco 0.1.0 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate disco 0.1.0 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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 proc-macro2 v1.0.8 [INFO] [stderr] Downloaded synstructure v0.12.3 [INFO] [stderr] Downloaded zeroize v1.1.0 [INFO] [stderr] Downloaded getrandom v0.1.14 [INFO] [stderr] Downloaded quote v1.0.2 [INFO] [stderr] Downloaded clear_on_drop v0.2.3 [INFO] [stderr] Downloaded c2-chacha v0.2.3 [INFO] [stderr] Downloaded sha2 v0.8.1 [INFO] [stderr] Downloaded ppv-lite86 v0.2.6 [INFO] [stderr] Downloaded ed25519-dalek v1.0.0-pre.3 [INFO] [stderr] Downloaded generic-array v0.12.3 [INFO] [stderr] Downloaded rand_chacha v0.2.1 [INFO] [stderr] Downloaded typenum v1.11.2 [INFO] [stderr] Downloaded x25519-dalek v0.6.0 [INFO] [stderr] Downloaded syn v1.0.15 [INFO] [stderr] Downloaded libc v0.2.67 [INFO] [stderr] Downloaded curve25519-dalek v2.0.0 [INFO] [stderr] Downloaded strobe-rs v0.5.2 [INFO] [stderr] Downloaded subtle v2.2.2 [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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ae70a292db90c6b8360ccba8d9a4425a2f8ef91e79d2fdaf7b4f88e64da71113 [INFO] running `Command { std: "docker" "start" "-a" "ae70a292db90c6b8360ccba8d9a4425a2f8ef91e79d2fdaf7b4f88e64da71113", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ae70a292db90c6b8360ccba8d9a4425a2f8ef91e79d2fdaf7b4f88e64da71113", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ae70a292db90c6b8360ccba8d9a4425a2f8ef91e79d2fdaf7b4f88e64da71113", kill_on_drop: false }` [INFO] [stdout] ae70a292db90c6b8360ccba8d9a4425a2f8ef91e79d2fdaf7b4f88e64da71113 [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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] e0e3adb036efe6f9583cde97dc3ce6b7988d3b575894a24a7182a9491a635437 [INFO] running `Command { std: "docker" "start" "-a" "e0e3adb036efe6f9583cde97dc3ce6b7988d3b575894a24a7182a9491a635437", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling typenum v1.11.2 [INFO] [stderr] Compiling libc v0.2.67 [INFO] [stderr] Compiling syn v1.0.15 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Checking byte-tools v0.3.1 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking subtle v2.2.2 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking opaque-debug v0.2.3 [INFO] [stderr] Checking block-padding v0.1.5 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking strobe-rs v0.5.2 [INFO] [stderr] Compiling clear_on_drop v0.2.3 [INFO] [stderr] Compiling quote v1.0.2 [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 ed25519-dalek v1.0.0-pre.3 [INFO] [stderr] Checking x25519-dalek v0.6.0 [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: `#[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] 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] 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 8.72s [INFO] running `Command { std: "docker" "inspect" "e0e3adb036efe6f9583cde97dc3ce6b7988d3b575894a24a7182a9491a635437", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e0e3adb036efe6f9583cde97dc3ce6b7988d3b575894a24a7182a9491a635437", kill_on_drop: false }` [INFO] [stdout] e0e3adb036efe6f9583cde97dc3ce6b7988d3b575894a24a7182a9491a635437 [INFO] checking disco-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate disco 0.1.0 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate disco 0.1.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-4-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9de0df13ed0197d97eda8af6125e694fc1c7b4e3abfbb36689e80ef3b07c4ed4 [INFO] running `Command { std: "docker" "start" "-a" "9de0df13ed0197d97eda8af6125e694fc1c7b4e3abfbb36689e80ef3b07c4ed4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9de0df13ed0197d97eda8af6125e694fc1c7b4e3abfbb36689e80ef3b07c4ed4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9de0df13ed0197d97eda8af6125e694fc1c7b4e3abfbb36689e80ef3b07c4ed4", kill_on_drop: false }` [INFO] [stdout] 9de0df13ed0197d97eda8af6125e694fc1c7b4e3abfbb36689e80ef3b07c4ed4 [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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6937b1e147c3f841cf11ad64a598be4877470802081e7c8333ab264b3c8de0aa [INFO] running `Command { std: "docker" "start" "-a" "6937b1e147c3f841cf11ad64a598be4877470802081e7c8333ab264b3c8de0aa", 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 byteorder v1.3.4 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Compiling syn v1.0.15 [INFO] [stderr] Checking subtle v2.2.2 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Checking byte-tools v0.3.1 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking opaque-debug v0.2.3 [INFO] [stderr] Checking block-padding v0.1.5 [INFO] [stderr] Checking c2-chacha v0.2.3 [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] Compiling quote v1.0.2 [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: `#[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] 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] 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 8.47s [INFO] running `Command { std: "docker" "inspect" "6937b1e147c3f841cf11ad64a598be4877470802081e7c8333ab264b3c8de0aa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6937b1e147c3f841cf11ad64a598be4877470802081e7c8333ab264b3c8de0aa", kill_on_drop: false }` [INFO] [stdout] 6937b1e147c3f841cf11ad64a598be4877470802081e7c8333ab264b3c8de0aa