[INFO] cloning repository https://github.com/jliklik/rusty_i2c
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jliklik/rusty_i2c" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjliklik%2Frusty_i2c", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjliklik%2Frusty_i2c'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ddc61097d39ce45cace0454cbf63d0e002783f0
[INFO] testing jliklik/rusty_i2c against 1.95.0 for beta-1.96-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjliklik%2Frusty_i2c" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jliklik/rusty_i2c
[INFO] finished tweaking git repo https://github.com/jliklik/rusty_i2c
[INFO] tweaked toml for git repo https://github.com/jliklik/rusty_i2c written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jliklik/rusty_i2c on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jliklik/rusty_i2c 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: /workspace/builds/worker-0-tc1/source/exec/Cargo.toml: unused manifest key: build
[INFO] [stderr] help: build is a valid .cargo/config.toml key
[INFO] [stderr] warning: /workspace/builds/worker-0-tc1/source/exec/Cargo.toml: unused manifest key: target.thumbv7m-none-eabi.runner
[INFO] [stderr] warning: /workspace/builds/worker-0-tc1/source/exec/Cargo.toml: unused manifest key: target.thumbv7m-none-eabi.rustflags
[INFO] [stderr] warning: /workspace/builds/worker-0-tc1/source/bme280/Cargo.toml: unused manifest key: build
[INFO] [stderr] help: build is a valid .cargo/config.toml key
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded vcell v0.1.3
[INFO] [stderr]   Downloaded embedded-hal v0.2.7
[INFO] [stderr]   Downloaded nb v0.1.3
[INFO] [stderr]   Downloaded volatile-register v0.2.1
[INFO] [stderr]   Downloaded cortex-m-rt v0.7.3
[INFO] [stderr]   Downloaded stm32-usbd v0.6.0
[INFO] [stderr]   Downloaded assert_approx_eq v1.1.0
[INFO] [stderr]   Downloaded fugit v0.3.7
[INFO] [stderr]   Downloaded bxcan v0.7.0
[INFO] [stderr]   Downloaded gcd v2.3.0
[INFO] [stderr]   Downloaded usb-device v0.2.9
[INFO] [stderr]   Downloaded cortex-m v0.7.7
[INFO] [stderr]   Downloaded fugit-timer v0.1.3
[INFO] [stderr]   Downloaded embedded-dma v0.2.0
[INFO] [stderr]   Downloaded nb v1.1.0
[INFO] [stderr]   Downloaded bitfield v0.13.2
[INFO] [stderr]   Downloaded bare-metal v1.0.0
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.5.0
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.7.0
[INFO] [stderr]   Downloaded stm32f1xx-hal v0.10.0
[INFO] [stderr]   Downloaded stm32f1 v0.15.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09640e84582b1caa0a2d144d2383bf16d4ac9052c566c511341f6352ab2b934f
[INFO] running `Command { std: "docker" "start" "-a" "09640e84582b1caa0a2d144d2383bf16d4ac9052c566c511341f6352ab2b934f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09640e84582b1caa0a2d144d2383bf16d4ac9052c566c511341f6352ab2b934f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09640e84582b1caa0a2d144d2383bf16d4ac9052c566c511341f6352ab2b934f", kill_on_drop: false }`
[INFO] [stdout] 09640e84582b1caa0a2d144d2383bf16d4ac9052c566c511341f6352ab2b934f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b66fef51ab7cb822dad88078ed23b012a73c87cdc13dd4bb74bdf91fae12387
[INFO] running `Command { std: "docker" "start" "-a" "4b66fef51ab7cb822dad88078ed23b012a73c87cdc13dd4bb74bdf91fae12387", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr]   |
[INFO] [stderr]   = note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr]   = note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr]   = note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr] warning: /opt/rustwide/workdir/bme280/Cargo.toml: unused manifest key: build
[INFO] [stderr] help: build is a valid .cargo/config.toml key
[INFO] [stderr] warning: /opt/rustwide/workdir/exec/Cargo.toml: unused manifest key: build
[INFO] [stderr] help: build is a valid .cargo/config.toml key
[INFO] [stderr] warning: /opt/rustwide/workdir/exec/Cargo.toml: unused manifest key: target.thumbv7m-none-eabi.runner
[INFO] [stderr] warning: /opt/rustwide/workdir/exec/Cargo.toml: unused manifest key: target.thumbv7m-none-eabi.rustflags
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling nb v1.1.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.66
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling vcell v0.1.3
[INFO] [stderr]    Compiling unicode-ident v1.0.11
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.7.3
[INFO] [stderr]    Compiling stm32f1 v0.15.1
[INFO] [stderr]    Compiling stm32-usbd v0.6.0
[INFO] [stderr]    Compiling gcd v2.3.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling usb-device v0.2.9
[INFO] [stderr]    Compiling bare-metal v1.0.0
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling volatile-register v0.2.1
[INFO] [stderr]    Compiling cortex-m-semihosting v0.5.0
[INFO] [stderr]    Compiling embedded-dma v0.2.0
[INFO] [stderr]    Compiling assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling fugit v0.3.7
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling bxcan v0.7.0
[INFO] [stderr]    Compiling bme280 v0.1.0 (/opt/rustwide/workdir/bme280)
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stdout] warning: unused variable: `mode`
[INFO] [stdout]    --> bme280/src/bme280.rs:295:14
[INFO] [stdout]     |
[INFO] [stdout] 295 |         let (mode, osrs_p, osrs_t, osrs_h) = self.read_ctrl_meas();
[INFO] [stdout]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_mode`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling fugit-timer v0.1.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.0
[INFO] [stderr]    Compiling stm32f1xx-hal v0.10.0
[INFO] [stderr]    Compiling exec v0.1.0 (/opt/rustwide/workdir/exec)
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> exec/src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let mut bme280_delay = cp.SYST.delay(&clocks);
[INFO] [stdout]    |         ----^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `exec` (bin "exec") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "4b66fef51ab7cb822dad88078ed23b012a73c87cdc13dd4bb74bdf91fae12387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b66fef51ab7cb822dad88078ed23b012a73c87cdc13dd4bb74bdf91fae12387", kill_on_drop: false }`
[INFO] [stdout] 4b66fef51ab7cb822dad88078ed23b012a73c87cdc13dd4bb74bdf91fae12387
