[INFO] fetching crate led_bargraph 0.2.1...
[INFO] testing led_bargraph-0.2.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate led_bargraph 0.2.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate led_bargraph 0.2.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded docopt v1.1.1
[INFO] [stderr]   Downloaded embedded-hal v0.2.6
[INFO] [stderr]   Downloaded spidev v0.3.0
[INFO] [stderr]   Downloaded sysfs_gpio v0.5.4
[INFO] [stderr]   Downloaded rustc_version v0.1.7
[INFO] [stderr]   Downloaded semver v0.1.20
[INFO] [stderr]   Downloaded i2cdev v0.4.4
[INFO] [stderr]   Downloaded linux-embedded-hal v0.2.2
[INFO] [stderr]   Downloaded ht16k33 v0.3.0
[INFO] [stderr]   Downloaded nix v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ae498b336ccb34e2453ab052fbdb18d50a310f31613c3cf8ca700ee33a86f0ad
[INFO] running `Command { std: "docker" "start" "-a" "ae498b336ccb34e2453ab052fbdb18d50a310f31613c3cf8ca700ee33a86f0ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae498b336ccb34e2453ab052fbdb18d50a310f31613c3cf8ca700ee33a86f0ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae498b336ccb34e2453ab052fbdb18d50a310f31613c3cf8ca700ee33a86f0ad", kill_on_drop: false }`
[INFO] [stdout] ae498b336ccb34e2453ab052fbdb18d50a310f31613c3cf8ca700ee33a86f0ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7fd11eb1887f2177f93b959e8e1ab3a88076639bbbcdb7be9eba448fb3c07ccf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7fd11eb1887f2177f93b959e8e1ab3a88076639bbbcdb7be9eba448fb3c07ccf", kill_on_drop: false }`
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling crossbeam v0.2.12
[INFO] [stderr]    Compiling slog-async v2.7.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling docopt v1.1.1
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling slog-scope v4.4.0
[INFO] [stderr]    Compiling slog-stdlog v3.0.5
[INFO] [stderr]    Compiling ht16k33 v0.3.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling slog-term v2.8.0
[INFO] [stderr]    Compiling 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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.88s
[INFO] running `Command { std: "docker" "inspect" "7fd11eb1887f2177f93b959e8e1ab3a88076639bbbcdb7be9eba448fb3c07ccf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fd11eb1887f2177f93b959e8e1ab3a88076639bbbcdb7be9eba448fb3c07ccf", kill_on_drop: false }`
[INFO] [stdout] 7fd11eb1887f2177f93b959e8e1ab3a88076639bbbcdb7be9eba448fb3c07ccf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8567ee1a9454f066b4f9723eb88301e8d608e321ccf791a5f77f15b364e4a3d0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8567ee1a9454f066b4f9723eb88301e8d608e321ccf791a5f77f15b364e4a3d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `Command { std: "docker" "inspect" "8567ee1a9454f066b4f9723eb88301e8d608e321ccf791a5f77f15b364e4a3d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8567ee1a9454f066b4f9723eb88301e8d608e321ccf791a5f77f15b364e4a3d0", kill_on_drop: false }`
[INFO] [stdout] 8567ee1a9454f066b4f9723eb88301e8d608e321ccf791a5f77f15b364e4a3d0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 28a8547ac5a416362d8fd0114244bda60e473d3e317ef4ddc8d54d2804684327
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "28a8547ac5a416362d8fd0114244bda60e473d3e317ef4ddc8d54d2804684327", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stdout] running 6 tests
[INFO] [stderr]    --> src/lib.rs:477:17
[INFO] [stdout] test tests::clear ... ok
[INFO] [stderr]     |
[INFO] [stdout] test tests::update ... ok
[INFO] [stderr] 477 |             let mut color = match led {
[INFO] [stdout] test tests::new ... ok
[INFO] [stderr]     |                 ----^^^^^
[INFO] [stdout] test tests::set_blink ... ok
[INFO] [stderr]     |                 |
[INFO] [stdout] test tests::initialize ... ok
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `led_bargraph` (lib) generated 1 warning
[INFO] [stderr] warning: `led_bargraph` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/led_bargraph-9cc8ec0f24a0e48d)
[INFO] [stdout] test tests::show ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/led_bargraph-dd5ad42ed92b3331)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests led_bargraph
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - Bargraph<I2C>::new (line 66) ... ok
[INFO] [stdout] test src/lib.rs - Bargraph<I2C>::clear (line 138) ... ok
[INFO] [stdout] test src/lib.rs - Bargraph<I2C>::initialize (line 110) ... ok
[INFO] [stdout] test src/lib.rs - Bargraph<I2C>::set_blink (line 230) ... ok
[INFO] [stdout] test src/lib.rs - Bargraph<I2C>::show (line 259) ... ok
[INFO] [stdout] test src/lib.rs - Bargraph<I2C>::update (line 176) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.97s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "28a8547ac5a416362d8fd0114244bda60e473d3e317ef4ddc8d54d2804684327", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28a8547ac5a416362d8fd0114244bda60e473d3e317ef4ddc8d54d2804684327", kill_on_drop: false }`
[INFO] [stdout] 28a8547ac5a416362d8fd0114244bda60e473d3e317ef4ddc8d54d2804684327