[INFO] cloning repository https://github.com/varesa/robot-iounit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/varesa/robot-iounit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frobot-iounit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frobot-iounit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 240780083bef40b1e4492667877c9965bf65402b
[INFO] building varesa/robot-iounit against master#9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19 for pr-117684
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frobot-iounit" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/varesa/robot-iounit on toolchain 9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/varesa/robot-iounit
[INFO] finished tweaking git repo https://github.com/varesa/robot-iounit
[INFO] tweaked toml for git repo https://github.com/varesa/robot-iounit written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/varesa/robot-iounit 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" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded volatile-register v0.2.0
[INFO] [stderr]   Downloaded embedded-hal v0.2.4
[INFO] [stderr]   Downloaded as-slice v0.1.4
[INFO] [stderr]   Downloaded cortex-m-semihosting v0.3.5
[INFO] [stderr]   Downloaded r0 v0.2.2
[INFO] [stderr]   Downloaded cortex-m-rt v0.6.13
[INFO] [stderr]   Downloaded vcell v0.1.2
[INFO] [stderr]   Downloaded panic-semihosting v0.5.4
[INFO] [stderr]   Downloaded cortex-m-rt-macros v0.1.8
[INFO] [stderr]   Downloaded aligned v0.3.4
[INFO] [stderr]   Downloaded cortex-m v0.6.4
[INFO] [stderr]   Downloaded stm32l0 v0.10.0
[INFO] [stderr]   Downloaded stm32l0 v0.12.1
[INFO] [stderr]   Downloaded stm32l0xx-hal v0.6.2
[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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 994010dee5401f25916a5a9386934064191603ed47ae0282e86227a28319308a
[INFO] running `Command { std: "docker" "start" "-a" "994010dee5401f25916a5a9386934064191603ed47ae0282e86227a28319308a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "994010dee5401f25916a5a9386934064191603ed47ae0282e86227a28319308a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "994010dee5401f25916a5a9386934064191603ed47ae0282e86227a28319308a", kill_on_drop: false }`
[INFO] [stdout] 994010dee5401f25916a5a9386934064191603ed47ae0282e86227a28319308a
[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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 320f79422ee75f0eb2f5cbecfa7313bfc9660be4e11d27e4a5f06b8b8b32b791
[INFO] running `Command { std: "docker" "start" "-a" "320f79422ee75f0eb2f5cbecfa7313bfc9660be4e11d27e4a5f06b8b8b32b791", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.6.4
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling vcell v0.1.2
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.13
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling stm32l0 v0.10.0
[INFO] [stderr]    Compiling stm32l0xx-hal v0.6.2
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling stm32l0 v0.12.1
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling as-slice v0.1.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling aligned v0.3.4
[INFO] [stderr]    Compiling panic-semihosting v0.5.4
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]    Compiling stm32f1-hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     tx.write_str("Hello world");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let _ = tx.write_str("Hello world");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |             tx.write_str("OK\n");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 96 |             let _ = tx.write_str("OK\n");
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.41s
[INFO] running `Command { std: "docker" "inspect" "320f79422ee75f0eb2f5cbecfa7313bfc9660be4e11d27e4a5f06b8b8b32b791", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "320f79422ee75f0eb2f5cbecfa7313bfc9660be4e11d27e4a5f06b8b8b32b791", kill_on_drop: false }`
[INFO] [stdout] 320f79422ee75f0eb2f5cbecfa7313bfc9660be4e11d27e4a5f06b8b8b32b791
[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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+9bd71afb90c2a6e0348cdd4a2b10a3bf39908f19" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4608f38ef39cafddc83e7a9ba7853fcc5fb6e12de35f592413b06e0effb8bdbb
[INFO] running `Command { std: "docker" "start" "-a" "4608f38ef39cafddc83e7a9ba7853fcc5fb6e12de35f592413b06e0effb8bdbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling stm32f1-hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     tx.write_str("Hello world");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let _ = tx.write_str("Hello world");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |             tx.write_str("OK\n");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 96 |             let _ = tx.write_str("OK\n");
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "4608f38ef39cafddc83e7a9ba7853fcc5fb6e12de35f592413b06e0effb8bdbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4608f38ef39cafddc83e7a9ba7853fcc5fb6e12de35f592413b06e0effb8bdbb", kill_on_drop: false }`
[INFO] [stdout] 4608f38ef39cafddc83e7a9ba7853fcc5fb6e12de35f592413b06e0effb8bdbb
[INFO] building varesa/robot-iounit against try#53e03135c36e913ff664ce8329041b7e3c2fd358 for pr-117684
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvaresa%2Frobot-iounit" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/varesa/robot-iounit on toolchain 53e03135c36e913ff664ce8329041b7e3c2fd358
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53e03135c36e913ff664ce8329041b7e3c2fd358" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/varesa/robot-iounit
[INFO] finished tweaking git repo https://github.com/varesa/robot-iounit
[INFO] tweaked toml for git repo https://github.com/varesa/robot-iounit written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/varesa/robot-iounit 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" "+53e03135c36e913ff664ce8329041b7e3c2fd358" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+53e03135c36e913ff664ce8329041b7e3c2fd358" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9e5180986029d034b8cf6f70968fcf88d1a785b394c9a8e92b713fb85262006
[INFO] running `Command { std: "docker" "start" "-a" "f9e5180986029d034b8cf6f70968fcf88d1a785b394c9a8e92b713fb85262006", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9e5180986029d034b8cf6f70968fcf88d1a785b394c9a8e92b713fb85262006", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9e5180986029d034b8cf6f70968fcf88d1a785b394c9a8e92b713fb85262006", kill_on_drop: false }`
[INFO] [stdout] f9e5180986029d034b8cf6f70968fcf88d1a785b394c9a8e92b713fb85262006
[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@sha256:0c7e0e8312ad82a1bed3696438480b7da990d348377d3754e1cd95b06a8a36c7" "/opt/rustwide/cargo-home/bin/cargo" "+53e03135c36e913ff664ce8329041b7e3c2fd358" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2afcb1d490ad7f294f6e5e23659002345b29e8319efef2c474636758048ebe83
[INFO] running `Command { std: "docker" "start" "-a" "2afcb1d490ad7f294f6e5e23659002345b29e8319efef2c474636758048ebe83", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.6.4
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling vcell v0.1.2
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.13
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling stm32l0 v0.10.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling stm32l0 v0.12.1
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling stm32l0xx-hal v0.6.2
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling as-slice v0.1.4
[INFO] [stderr]    Compiling aligned v0.3.4
[INFO] [stderr]    Compiling panic-semihosting v0.5.4
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]    Compiling stm32f1-hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:70:5
[INFO] [stdout]    |
[INFO] [stdout] 70 |     tx.write_str("Hello world");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let _ = tx.write_str("Hello world");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/main.rs:96:13
[INFO] [stdout]    |
[INFO] [stdout] 96 |             tx.write_str("OK\n");
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 96 |             let _ = tx.write_str("OK\n");
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: LC_ALL="C" PATH="/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/bin/self-contained:/opt/rustwide/cargo-home/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" VSLANG="1033" "cc" "-m64" "/tmp/rustcWcbkBN/symbols.o" "/opt/rustwide/target/debug/deps/stm32f1_hello-fe497620772e52c1.stm32f1_hello.82dce048873b55e6-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/stm32f1_hello-fe497620772e52c1.13viv1igw10a0s70.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/cortex-m-rt-28a43c394d4ff808/out" "-L" "/opt/rustwide/target/debug/build/stm32l0-17262caa63c88070/out" "-L" "/opt/rustwide/target/debug/build/stm32l0xx-hal-2b525c5fc4e1a463/out" "-L" "/opt/rustwide/target/debug/build/stm32l0xx-hal-2b525c5fc4e1a463/out" "-L" "/opt/rustwide/target/debug/build/stm32l0-f3edd4a0505c0184/out" "-L" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libstm32l0xx_hal-595b7741a0af1da6.rlib" "/opt/rustwide/target/debug/deps/libcast-8a136acc3677273e.rlib" "/opt/rustwide/target/debug/deps/libstm32l0-bf5fde3b020fa3a8.rlib" "/opt/rustwide/target/debug/deps/libembedded_hal-78e4a86f2eecc554.rlib" "/opt/rustwide/target/debug/deps/libvoid-9e681b028a877516.rlib" "/opt/rustwide/target/debug/deps/libnb-c5cfc3e1435b603b.rlib" "/opt/rustwide/target/debug/deps/libnb-3e28b6797b0156a8.rlib" "/opt/rustwide/target/debug/deps/libpanic_semihosting-4616b66de7340a0c.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-72b35984a787fb54.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-0fdedff926cd8b5a.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-fe0525e327a5464a.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-795b2243f06bd098.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-86ce554ff6ad08cd.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-1be635a4727d8e5e.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-1e55d89766af9c5f.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-02605c7065574d0d.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-0d17ba1067febc2c.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-2408fbe38b247900.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-b3c63e8997fdca47.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-bfa7a39ebb77d49a.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-4b955078cf51c0a1.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-1a6fbee0083900be.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-2b93db426c5a26c2.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-b30975e2b876cf32.rlib" "/opt/rustwide/target/debug/deps/libcortex_m_semihosting-db40ec69d51bb28a.rlib" "/opt/rustwide/target/debug/deps/libcortex_m-039635308aef227c.rlib" "/opt/rustwide/target/debug/deps/libvolatile_register-3c08fe93c9530ceb.rlib" "/opt/rustwide/target/debug/deps/libvcell-d8fc7556600d4dca.rlib" "/opt/rustwide/target/debug/deps/libbare_metal-40eaf2f712e13961.rlib" "/opt/rustwide/target/debug/deps/libaligned-873a744a2791ec79.rlib" "/opt/rustwide/target/debug/deps/libas_slice-9c90ecf86406c787.rlib" "/opt/rustwide/target/debug/deps/libstable_deref_trait-99ae74af448b958c.rlib" "/opt/rustwide/target/debug/deps/libgeneric_array-27e4d5c52adbe8f3.rlib" "/opt/rustwide/target/debug/deps/libgeneric_array-012896ba000198b1.rlib" "/opt/rustwide/target/debug/deps/libgeneric_array-3cc353820b3988d4.rlib" "/opt/rustwide/target/debug/deps/libtypenum-37e8da50dfc9f34b.rlib" "/opt/rustwide/target/debug/deps/libcortex_m_rt-f1c8df2dc2472c0e.rlib" "/opt/rustwide/target/debug/deps/libr0-52ce6704675dcdb1.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-cd2f2bc505f56f50.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-ec02dd343723da85.rlib" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-408115ade0360d2a.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-B/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-L" "/opt/rustwide/rustup-home/toolchains/53e03135c36e913ff664ce8329041b7e3c2fd358/lib/rustlib/x86_64-unknown-linux-gnu/lib/self-contained" "-o" "/opt/rustwide/target/debug/deps/stm32f1_hello-fe497620772e52c1" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: rust-lld: error: /opt/rustwide/target/debug/deps/libstm32l0xx_hal-595b7741a0af1da6.rlib(flash.o) is incompatible with elf64-x86-64
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stm32f1-hello` (bin "stm32f1-hello") due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "2afcb1d490ad7f294f6e5e23659002345b29e8319efef2c474636758048ebe83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2afcb1d490ad7f294f6e5e23659002345b29e8319efef2c474636758048ebe83", kill_on_drop: false }`
[INFO] [stdout] 2afcb1d490ad7f294f6e5e23659002345b29e8319efef2c474636758048ebe83