[INFO] fetching crate disco 0.1.0... [INFO] checking disco-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate disco 0.1.0 into /workspace/builds/worker-2-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-2-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 v1.1.0 [INFO] [stderr] Downloaded x25519-dalek v0.6.0 [INFO] [stderr] Downloaded zeroize_derive v1.0.0 [INFO] [stderr] Downloaded synstructure v0.12.3 [INFO] [stderr] Downloaded clear_on_drop v0.2.3 [INFO] [stderr] Downloaded sha2 v0.8.1 [INFO] [stderr] Downloaded proc-macro2 v1.0.8 [INFO] [stderr] Downloaded cc v1.0.50 [INFO] [stderr] Downloaded strobe-rs v0.5.2 [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 ed25519-dalek v1.0.0-pre.3 [INFO] [stderr] Downloaded rand_chacha v0.2.1 [INFO] [stderr] Downloaded typenum v1.11.2 [INFO] [stderr] Downloaded subtle v2.2.2 [INFO] [stderr] Downloaded getrandom v0.1.14 [INFO] [stderr] Downloaded quote v1.0.2 [INFO] [stderr] Downloaded unicode-xid v0.2.0 [INFO] [stderr] Downloaded ppv-lite86 v0.2.6 [INFO] [stderr] Downloaded c2-chacha v0.2.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 17510654c4538fda088cc070dcd614cc70b933c9ba42a8fab93c0607ba139675 [INFO] running `Command { std: "docker" "start" "-a" "17510654c4538fda088cc070dcd614cc70b933c9ba42a8fab93c0607ba139675", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "17510654c4538fda088cc070dcd614cc70b933c9ba42a8fab93c0607ba139675", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "17510654c4538fda088cc070dcd614cc70b933c9ba42a8fab93c0607ba139675", kill_on_drop: false }` [INFO] [stdout] 17510654c4538fda088cc070dcd614cc70b933c9ba42a8fab93c0607ba139675 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 05606706fb981685dd2a8a04a4a89705b01b0c083d5b30df615d291c5f5ac036 [INFO] running `Command { std: "docker" "start" "-a" "05606706fb981685dd2a8a04a4a89705b01b0c083d5b30df615d291c5f5ac036", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.8 [INFO] [stderr] Compiling typenum v1.11.2 [INFO] [stderr] Compiling unicode-xid v0.2.0 [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 subtle v2.2.2 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [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 block-padding v0.1.5 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking fake-simd v0.1.2 [INFO] [stderr] Checking opaque-debug v0.2.3 [INFO] [stderr] Checking tiny-keccak v1.5.0 [INFO] [stderr] Checking strobe-rs v0.5.2 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking rand_core v0.5.1 [INFO] [stderr] Compiling clear_on_drop v0.2.3 [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: `#[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 14.46s [INFO] running `Command { std: "docker" "inspect" "05606706fb981685dd2a8a04a4a89705b01b0c083d5b30df615d291c5f5ac036", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "05606706fb981685dd2a8a04a4a89705b01b0c083d5b30df615d291c5f5ac036", kill_on_drop: false }` [INFO] [stdout] 05606706fb981685dd2a8a04a4a89705b01b0c083d5b30df615d291c5f5ac036 [INFO] checking disco-0.1.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar [INFO] extracting crate disco 0.1.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate disco 0.1.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-2-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 52243f5a54d08d89af49166461fc87f44470cea98e88ed7cc98d1f0b964cf837 [INFO] running `Command { std: "docker" "start" "-a" "52243f5a54d08d89af49166461fc87f44470cea98e88ed7cc98d1f0b964cf837", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "52243f5a54d08d89af49166461fc87f44470cea98e88ed7cc98d1f0b964cf837", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "52243f5a54d08d89af49166461fc87f44470cea98e88ed7cc98d1f0b964cf837", kill_on_drop: false }` [INFO] [stdout] 52243f5a54d08d89af49166461fc87f44470cea98e88ed7cc98d1f0b964cf837 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 820c89299ed1735d73259e27bf0ead24f9309a7e351f794caa3b107f036fc809 [INFO] running `Command { std: "docker" "start" "-a" "820c89299ed1735d73259e27bf0ead24f9309a7e351f794caa3b107f036fc809", 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 syn v1.0.15 [INFO] [stderr] Compiling byteorder v1.3.4 [INFO] [stderr] Compiling getrandom v0.1.14 [INFO] [stderr] Checking ppv-lite86 v0.2.6 [INFO] [stderr] Compiling cc v1.0.50 [INFO] [stderr] Compiling crunchy v0.2.2 [INFO] [stderr] Checking subtle v2.2.2 [INFO] [stderr] Checking byte-tools v0.3.1 [INFO] [stderr] Checking block-padding v0.1.5 [INFO] [stderr] Checking c2-chacha v0.2.3 [INFO] [stderr] Checking fake-simd v0.1.2 [INFO] [stderr] Checking opaque-debug v0.2.3 [INFO] [stderr] Checking tiny-keccak v1.5.0 [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 generic-array v0.12.3 [INFO] [stderr] Checking rand_chacha v0.2.1 [INFO] [stderr] Checking rand v0.7.3 [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: `#[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 14.60s [INFO] running `Command { std: "docker" "inspect" "820c89299ed1735d73259e27bf0ead24f9309a7e351f794caa3b107f036fc809", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "820c89299ed1735d73259e27bf0ead24f9309a7e351f794caa3b107f036fc809", kill_on_drop: false }` [INFO] [stdout] 820c89299ed1735d73259e27bf0ead24f9309a7e351f794caa3b107f036fc809