[INFO] fetching crate stm32l4-stm32hal 0.13.1...
[INFO] checking stm32l4-stm32hal-0.13.1 against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] extracting crate stm32l4-stm32hal 0.13.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate stm32l4-stm32hal 0.13.1
[INFO] finished tweaking crates.io crate stm32l4-stm32hal 0.13.1
[INFO] tweaked toml for crates.io crate stm32l4-stm32hal 0.13.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate stm32l4-stm32hal 0.13.1 on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding bare-metal v0.2.5 (available: v1.0.0)
[INFO] [stderr]       Adding cortex-m-rt v0.6.15 (available: v0.7.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fac6b15d452ad4811d5da255895485a1ca909ca5cc788a34678ea75f97826f7d
[INFO] running `Command { std: "docker" "start" "-a" "fac6b15d452ad4811d5da255895485a1ca909ca5cc788a34678ea75f97826f7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fac6b15d452ad4811d5da255895485a1ca909ca5cc788a34678ea75f97826f7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fac6b15d452ad4811d5da255895485a1ca909ca5cc788a34678ea75f97826f7d", kill_on_drop: false }`
[INFO] [stdout] fac6b15d452ad4811d5da255895485a1ca909ca5cc788a34678ea75f97826f7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7f956f689c953d065b7bb4d59ed6dcb57527be99a4d0fa02d5a23203e836d9d
[INFO] running `Command { std: "docker" "start" "-a" "e7f956f689c953d065b7bb4d59ed6dcb57527be99a4d0fa02d5a23203e836d9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]    Compiling stm32l4-stm32hal v0.13.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stdout] error: struct `Reg` is never constructed
[INFO] [stdout]   --> src/generic.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Reg<U, REG> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `R` is never constructed
[INFO] [stdout]    --> src/generic.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub struct R<U, T> {
[INFO] [stdout]     |            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `W` is never constructed
[INFO] [stdout]    --> src/generic.rs:207:12
[INFO] [stdout]     |
[INFO] [stdout] 207 | pub struct W<U, REG> {
[INFO] [stdout]     |            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/generic.rs:162:19
[INFO] [stdout]     |
[INFO] [stdout] 156 | / impl<U, T> R<U, T>
[INFO] [stdout] 157 | | where
[INFO] [stdout] 158 | |     U: Copy
[INFO] [stdout]     | |___________- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 162 |       pub(crate) fn new(bits: U) -> Self {
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stm32l4-stm32hal` (lib) due to 3 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `Reg` is never constructed
[INFO] [stdout]   --> src/generic.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Reg<U, REG> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `R` is never constructed
[INFO] [stdout]    --> src/generic.rs:151:12
[INFO] [stdout]     |
[INFO] [stdout] 151 | pub struct R<U, T> {
[INFO] [stdout]     |            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `W` is never constructed
[INFO] [stdout]    --> src/generic.rs:207:12
[INFO] [stdout]     |
[INFO] [stdout] 207 | pub struct W<U, REG> {
[INFO] [stdout]     |            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/generic.rs:162:19
[INFO] [stdout]     |
[INFO] [stdout] 156 | / impl<U, T> R<U, T>
[INFO] [stdout] 157 | | where
[INFO] [stdout] 158 | |     U: Copy
[INFO] [stdout]     | |___________- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 162 |       pub(crate) fn new(bits: U) -> Self {
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stm32l4-stm32hal` (lib test) due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "e7f956f689c953d065b7bb4d59ed6dcb57527be99a4d0fa02d5a23203e836d9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7f956f689c953d065b7bb4d59ed6dcb57527be99a4d0fa02d5a23203e836d9d", kill_on_drop: false }`
[INFO] [stdout] e7f956f689c953d065b7bb4d59ed6dcb57527be99a4d0fa02d5a23203e836d9d
