[INFO] fetching crate esp8266-wifi-serial 0.1.3... [INFO] checking esp8266-wifi-serial-0.1.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never [INFO] extracting crate esp8266-wifi-serial 0.1.3 into /workspace/builds/worker-2-tc1/source [INFO] validating manifest of crates.io crate esp8266-wifi-serial 0.1.3 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 esp8266-wifi-serial 0.1.3 [INFO] finished tweaking crates.io crate esp8266-wifi-serial 0.1.3 [INFO] tweaked toml for crates.io crate esp8266-wifi-serial 0.1.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 51 packages [INFO] [stderr] Adding aho-corasick v0.7.15 (latest: v1.1.3) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding cfg-if v0.1.10 (latest: v1.0.0) [INFO] [stderr] Adding embedded-hal v0.2.7 (latest: v1.0.0) [INFO] [stderr] Adding hash32 v0.2.1 (latest: v0.3.1) [INFO] [stderr] Adding heapless v0.7.17 (latest: v0.8.0) [INFO] [stderr] Adding libudev v0.2.0 (latest: v0.3.0) [INFO] [stderr] Adding mach v0.1.2 (latest: v0.3.2) [INFO] [stderr] Adding mach v0.2.3 (latest: v0.3.2) [INFO] [stderr] Adding memchr v2.3.4 (latest: v2.7.2) [INFO] [stderr] Adding nb v0.1.3 (latest: v1.1.0) [INFO] [stderr] Adding nix v0.16.1 (latest: v0.28.0) [INFO] [stderr] Adding no-std-net v0.5.0 (latest: v0.6.0) [INFO] [stderr] Adding nom v6.2.2 (latest: v7.1.3) [INFO] [stderr] Adding regex v1.4.6 (latest: v1.10.4) [INFO] [stderr] Adding regex-syntax v0.6.29 (latest: v0.8.3) [INFO] [stderr] Adding serialport v4.0.1 (latest: v4.3.0) [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] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded no-std-net v0.5.0 [INFO] [stderr] Downloaded no-stdout v0.1.0 [INFO] [stderr] Downloaded atomic-polyfill v1.0.3 [INFO] [stderr] Downloaded hash32 v0.2.1 [INFO] [stderr] Downloaded heapless v0.7.17 [INFO] [stderr] Downloaded nom v6.2.2 [INFO] [stderr] Downloaded nix v0.16.1 [INFO] [stderr] Downloaded regex v1.4.6 [INFO] [stderr] Downloaded serialport v4.0.1 [INFO] [stderr] Downloaded simple-clock v0.1.0 [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] 594bb471e54fdce593a329aee848902e986177ca01ff9ed38d04faab28f630c5 [INFO] running `Command { std: "docker" "start" "-a" "594bb471e54fdce593a329aee848902e986177ca01ff9ed38d04faab28f630c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "594bb471e54fdce593a329aee848902e986177ca01ff9ed38d04faab28f630c5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "594bb471e54fdce593a329aee848902e986177ca01ff9ed38d04faab28f630c5", kill_on_drop: false }` [INFO] [stdout] 594bb471e54fdce593a329aee848902e986177ca01ff9ed38d04faab28f630c5 [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] 534fb00256ce61a6ba1b70fa736edba43994469bcd9a64464bb01a267559e164 [INFO] running `Command { std: "docker" "start" "-a" "534fb00256ce61a6ba1b70fa736edba43994469bcd9a64464bb01a267559e164", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Compiling nix v0.16.1 [INFO] [stderr] Checking nb v1.1.0 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling libudev-sys v0.1.4 [INFO] [stderr] Compiling nom v6.2.2 [INFO] [stderr] Checking hash32 v0.2.1 [INFO] [stderr] Checking no-std-net v0.5.0 [INFO] [stderr] Checking simple-clock v0.1.0 [INFO] [stderr] Checking no-stdout v0.1.0 [INFO] [stderr] Compiling heapless v0.7.17 [INFO] [stderr] Checking spin v0.9.8 [INFO] [stderr] Checking assert_matches v1.5.0 [INFO] [stderr] Checking nb v0.1.3 [INFO] [stderr] Checking embedded-hal v0.2.7 [INFO] [stderr] Checking libudev v0.2.0 [INFO] [stderr] Checking esp8266-wifi-serial v0.1.3 (/opt/rustwide/workdir) [INFO] [stderr] Checking serialport v4.0.1 [INFO] [stdout] warning: field `guard` is never read [INFO] [stdout] --> tests/common/mod.rs:41:5 [INFO] [stdout] | [INFO] [stdout] 40 | struct SerialPortWrapper { [INFO] [stdout] | ----------------- field in this struct [INFO] [stdout] 41 | guard: Rc>, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `SerialPortWrapper` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.72s [INFO] running `Command { std: "docker" "inspect" "534fb00256ce61a6ba1b70fa736edba43994469bcd9a64464bb01a267559e164", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "534fb00256ce61a6ba1b70fa736edba43994469bcd9a64464bb01a267559e164", kill_on_drop: false }` [INFO] [stdout] 534fb00256ce61a6ba1b70fa736edba43994469bcd9a64464bb01a267559e164 [INFO] checking esp8266-wifi-serial-0.1.3 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never [INFO] extracting crate esp8266-wifi-serial 0.1.3 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate esp8266-wifi-serial 0.1.3 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 esp8266-wifi-serial 0.1.3 [INFO] finished tweaking crates.io crate esp8266-wifi-serial 0.1.3 [INFO] tweaked toml for crates.io crate esp8266-wifi-serial 0.1.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 51 packages [INFO] [stderr] Adding aho-corasick v0.7.15 (latest: v1.1.3) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding cfg-if v0.1.10 (latest: v1.0.0) [INFO] [stderr] Adding embedded-hal v0.2.7 (latest: v1.0.0) [INFO] [stderr] Adding hash32 v0.2.1 (latest: v0.3.1) [INFO] [stderr] Adding heapless v0.7.17 (latest: v0.8.0) [INFO] [stderr] Adding libudev v0.2.0 (latest: v0.3.0) [INFO] [stderr] Adding mach v0.1.2 (latest: v0.3.2) [INFO] [stderr] Adding mach v0.2.3 (latest: v0.3.2) [INFO] [stderr] Adding memchr v2.3.4 (latest: v2.7.2) [INFO] [stderr] Adding nb v0.1.3 (latest: v1.1.0) [INFO] [stderr] Adding nix v0.16.1 (latest: v0.28.0) [INFO] [stderr] Adding no-std-net v0.5.0 (latest: v0.6.0) [INFO] [stderr] Adding nom v6.2.2 (latest: v7.1.3) [INFO] [stderr] Adding regex v1.4.6 (latest: v1.10.4) [INFO] [stderr] Adding regex-syntax v0.6.29 (latest: v0.8.3) [INFO] [stderr] Adding serialport v4.0.1 (latest: v4.3.0) [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] [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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 18136adf067a24d846fac82ce0aa2d4d9897b9e7504addf9a872d533f93296b3 [INFO] running `Command { std: "docker" "start" "-a" "18136adf067a24d846fac82ce0aa2d4d9897b9e7504addf9a872d533f93296b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "18136adf067a24d846fac82ce0aa2d4d9897b9e7504addf9a872d533f93296b3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "18136adf067a24d846fac82ce0aa2d4d9897b9e7504addf9a872d533f93296b3", kill_on_drop: false }` [INFO] [stdout] 18136adf067a24d846fac82ce0aa2d4d9897b9e7504addf9a872d533f93296b3 [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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fc8f35634f60b3424ef77d0c74d6ff79e7b5e8a0075f985f59144a4060488da2 [INFO] running `Command { std: "docker" "start" "-a" "fc8f35634f60b3424ef77d0c74d6ff79e7b5e8a0075f985f59144a4060488da2", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling memchr v2.3.4 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking nb v1.1.0 [INFO] [stderr] Compiling nix v0.16.1 [INFO] [stderr] Compiling serde v1.0.197 [INFO] [stderr] Compiling libudev-sys v0.1.4 [INFO] [stderr] Compiling nom v6.2.2 [INFO] [stderr] Checking hash32 v0.2.1 [INFO] [stderr] Checking no-std-net v0.5.0 [INFO] [stderr] Checking simple-clock v0.1.0 [INFO] [stderr] Checking no-stdout v0.1.0 [INFO] [stderr] Compiling heapless v0.7.17 [INFO] [stderr] Checking assert_matches v1.5.0 [INFO] [stderr] Checking spin v0.9.8 [INFO] [stderr] Checking nb v0.1.3 [INFO] [stderr] Checking embedded-hal v0.2.7 [INFO] [stderr] Checking libudev v0.2.0 [INFO] [stderr] Checking esp8266-wifi-serial v0.1.3 (/opt/rustwide/workdir) [INFO] [stderr] Checking serialport v4.0.1 [INFO] [stdout] warning: field `guard` is never read [INFO] [stdout] --> tests/common/mod.rs:41:5 [INFO] [stdout] | [INFO] [stdout] 40 | struct SerialPortWrapper { [INFO] [stdout] | ----------------- field in this struct [INFO] [stdout] 41 | guard: Rc>, [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `SerialPortWrapper` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.42s [INFO] running `Command { std: "docker" "inspect" "fc8f35634f60b3424ef77d0c74d6ff79e7b5e8a0075f985f59144a4060488da2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fc8f35634f60b3424ef77d0c74d6ff79e7b5e8a0075f985f59144a4060488da2", kill_on_drop: false }` [INFO] [stdout] fc8f35634f60b3424ef77d0c74d6ff79e7b5e8a0075f985f59144a4060488da2