[INFO] fetching crate led_bargraph 0.2.1... [INFO] checking led_bargraph-0.2.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] extracting crate led_bargraph 0.2.1 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate led_bargraph 0.2.1 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 led_bargraph 0.2.1 [INFO] finished tweaking crates.io crate led_bargraph 0.2.1 [INFO] tweaked toml for crates.io crate led_bargraph 0.2.1 written to /workspace/builds/worker-4-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 101 packages [INFO] [stderr] Adding ansi_term v0.11.0 (latest: v0.12.1) [INFO] [stderr] Adding bitflags v0.3.3 (latest: v2.5.0) [INFO] [stderr] Adding bitflags v0.4.0 (latest: v2.5.0) [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.5.0) [INFO] [stderr] Adding cast v0.2.7 (latest: v0.3.0) [INFO] [stderr] Adding cfg-if v0.1.10 (latest: v1.0.0) [INFO] [stderr] Adding crossbeam v0.2.12 (latest: v0.8.4) [INFO] [stderr] Adding embedded-hal v0.2.7 (latest: v1.0.0) [INFO] [stderr] Adding ht16k33 v0.3.0 (latest: v0.4.0) [INFO] [stderr] Adding i2cdev v0.4.4 (latest: v0.6.0) [INFO] [stderr] Adding linux-embedded-hal v0.2.2 (latest: v0.4.0) [INFO] [stderr] Adding log v0.3.9 (latest: v0.4.21) [INFO] [stderr] Adding nb v0.1.3 (latest: v1.1.0) [INFO] [stderr] Adding nix v0.6.0 (latest: v0.28.0) [INFO] [stderr] Adding nix v0.14.1 (latest: v0.28.0) [INFO] [stderr] Adding object v0.32.2 (latest: v0.34.0) [INFO] [stderr] Adding rustc_version v0.1.7 (latest: v0.4.0) [INFO] [stderr] Adding semver v0.1.20 (latest: v1.0.22) [INFO] [stderr] Adding slog-stdlog v3.0.5 (latest: v4.1.1) [INFO] [stderr] Adding spidev v0.3.0 (latest: v0.6.0) [INFO] [stderr] Adding strsim v0.10.0 (latest: v0.11.1) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.58) [INFO] [stderr] Adding synstructure v0.12.6 (latest: v0.13.1) [INFO] [stderr] Adding sysfs_gpio v0.5.4 (latest: v0.6.1) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0) [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 spidev v0.3.0 [INFO] [stderr] Downloaded bitflags v0.4.0 [INFO] [stderr] Downloaded sysfs_gpio v0.5.4 [INFO] [stderr] Downloaded linux-embedded-hal v0.2.2 [INFO] [stderr] Downloaded bitflags v0.3.3 [INFO] [stderr] Downloaded docopt v1.1.1 [INFO] [stderr] Downloaded i2cdev v0.4.4 [INFO] [stderr] Downloaded ht16k33 v0.3.0 [INFO] [stderr] Downloaded nix v0.6.0 [INFO] [stderr] Downloaded slog-scope v4.4.0 [INFO] [stderr] Downloaded slog-stdlog v3.0.5 [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] f12994fa89d2680b60150b9c3142833856fefbccfd0d220f5196f984a90efe53 [INFO] running `Command { std: "docker" "start" "-a" "f12994fa89d2680b60150b9c3142833856fefbccfd0d220f5196f984a90efe53", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f12994fa89d2680b60150b9c3142833856fefbccfd0d220f5196f984a90efe53", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f12994fa89d2680b60150b9c3142833856fefbccfd0d220f5196f984a90efe53", kill_on_drop: false }` [INFO] [stdout] f12994fa89d2680b60150b9c3142833856fefbccfd0d220f5196f984a90efe53 [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] 44aaa25091280a0cc75c18c70a6ebbf2086c177f0c9b41f738270107e0c894b1 [INFO] running `Command { std: "docker" "start" "-a" "44aaa25091280a0cc75c18c70a6ebbf2086c177f0c9b41f738270107e0c894b1", kill_on_drop: false }` [INFO] [stderr] Compiling slog v2.7.0 [INFO] [stderr] Compiling semver v1.0.22 [INFO] [stderr] Compiling semver v0.1.20 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling nix v0.14.1 [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Compiling crossbeam-utils v0.8.19 [INFO] [stderr] Checking nb v1.1.0 [INFO] [stderr] Compiling unicode-xid v0.2.4 [INFO] [stderr] Compiling num-traits v0.2.18 [INFO] [stderr] Checking dirs-sys-next v0.1.2 [INFO] [stderr] Checking bitflags v0.4.0 [INFO] [stderr] Compiling time-core v0.1.2 [INFO] [stderr] Compiling syn v2.0.58 [INFO] [stderr] Checking arc-swap v1.7.1 [INFO] [stderr] Checking regex-syntax v0.8.3 [INFO] [stderr] Checking log v0.4.21 [INFO] [stderr] Checking nb v0.1.3 [INFO] [stderr] Compiling num-conv v0.1.0 [INFO] [stderr] Checking thread_local v1.1.8 [INFO] [stderr] Checking dirs-next v2.0.0 [INFO] [stderr] Checking embedded-hal v0.2.7 [INFO] [stderr] Checking crossbeam v0.2.12 [INFO] [stderr] Compiling time-macros v0.2.17 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking bitflags v0.3.3 [INFO] [stderr] Compiling slog-async v2.8.0 [INFO] [stderr] Checking term v0.7.0 [INFO] [stderr] Checking is-terminal v0.4.12 [INFO] [stderr] Compiling rustc_version v0.1.7 [INFO] [stderr] Checking take_mut v0.2.2 [INFO] [stderr] Checking strsim v0.10.0 [INFO] [stderr] Checking ansi_term v0.11.0 [INFO] [stderr] Compiling nix v0.6.0 [INFO] [stderr] Checking slog-scope v4.4.0 [INFO] [stderr] Compiling rustc_version v0.4.0 [INFO] [stderr] Checking slog-stdlog v3.0.5 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Checking crossbeam-channel v0.5.12 [INFO] [stderr] Compiling cast v0.2.7 [INFO] [stderr] Checking time v0.3.34 [INFO] [stderr] Checking num-integer v0.1.46 [INFO] [stderr] Checking regex-automata v0.4.6 [INFO] [stderr] Checking spidev v0.3.0 [INFO] [stderr] Checking slog-term v2.9.1 [INFO] [stderr] Compiling serde_derive v1.0.197 [INFO] [stderr] Checking sysfs_gpio v0.5.4 [INFO] [stderr] Checking i2cdev v0.4.4 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking linux-embedded-hal v0.2.2 [INFO] [stderr] Checking regex v1.10.4 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Checking backtrace v0.3.71 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Checking ht16k33 v0.3.0 [INFO] [stderr] Checking serde v1.0.197 [INFO] [stderr] Checking docopt v1.1.1 [INFO] [stderr] Checking led_bargraph v0.2.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:477:17 [INFO] [stdout] | [INFO] [stdout] 477 | let mut color = match led { [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:477:17 [INFO] [stdout] | [INFO] [stdout] 477 | let mut color = match led { [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `flag_i2c_mock` is never read [INFO] [stdout] --> src/bin/led-bargraph.rs:113:5 [INFO] [stdout] | [INFO] [stdout] 102 | struct Args { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 113 | flag_i2c_mock: bool, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Args` 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] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `flag_i2c_mock` is never read [INFO] [stdout] --> src/bin/led-bargraph.rs:113:5 [INFO] [stdout] | [INFO] [stdout] 102 | struct Args { [INFO] [stdout] | ---- field in this struct [INFO] [stdout] ... [INFO] [stdout] 113 | flag_i2c_mock: bool, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Args` 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] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.86s [INFO] running `Command { std: "docker" "inspect" "44aaa25091280a0cc75c18c70a6ebbf2086c177f0c9b41f738270107e0c894b1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "44aaa25091280a0cc75c18c70a6ebbf2086c177f0c9b41f738270107e0c894b1", kill_on_drop: false }` [INFO] [stdout] 44aaa25091280a0cc75c18c70a6ebbf2086c177f0c9b41f738270107e0c894b1