[INFO] fetching crate stm32f3-copterust 0.12.3...
[INFO] checking stm32f3-copterust-0.12.3 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate stm32f3-copterust 0.12.3 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate stm32f3-copterust 0.12.3 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 stm32f3-copterust 0.12.3
[INFO] finished tweaking crates.io crate stm32f3-copterust 0.12.3
[INFO] tweaked toml for crates.io crate stm32f3-copterust 0.12.3 written to /workspace/builds/worker-0-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 20 packages
[INFO] [stderr]       Adding bare-metal v0.2.5 (latest: v1.0.0)
[INFO] [stderr]       Adding bitfield v0.13.2 (latest: v0.14.0)
[INFO] [stderr]       Adding cortex-m-rt v0.6.15 (latest: v0.7.3)
[INFO] [stderr]       Adding cortex-m-rt-macros v0.6.15 (latest: v0.7.0)
[INFO] [stderr]       Adding embedded-hal v0.2.7 (latest: v1.0.0)
[INFO] [stderr]       Adding nb v0.1.3 (latest: v1.1.0)
[INFO] [stderr]       Adding r0 v0.2.2 (latest: v1.0.0)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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] 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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 202ca9e5e6ac2810a77fedaaed12d49db0477b511760fb1f6896a22bb5aaed3c
[INFO] running `Command { std: "docker" "start" "-a" "202ca9e5e6ac2810a77fedaaed12d49db0477b511760fb1f6896a22bb5aaed3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "202ca9e5e6ac2810a77fedaaed12d49db0477b511760fb1f6896a22bb5aaed3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "202ca9e5e6ac2810a77fedaaed12d49db0477b511760fb1f6896a22bb5aaed3c", kill_on_drop: false }`
[INFO] [stdout] 202ca9e5e6ac2810a77fedaaed12d49db0477b511760fb1f6896a22bb5aaed3c
[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=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] f156773ad36a75f832a4a09a60e77dba9e5115f4a9760fa8a083bafe88ebd204
[INFO] running `Command { std: "docker" "start" "-a" "f156773ad36a75f832a4a09a60e77dba9e5115f4a9760fa8a083bafe88ebd204", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]    Compiling cortex-m v0.7.7
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling stm32f3-copterust v0.12.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[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)]` 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 2.86s
[INFO] running `Command { std: "docker" "inspect" "f156773ad36a75f832a4a09a60e77dba9e5115f4a9760fa8a083bafe88ebd204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f156773ad36a75f832a4a09a60e77dba9e5115f4a9760fa8a083bafe88ebd204", kill_on_drop: false }`
[INFO] [stdout] f156773ad36a75f832a4a09a60e77dba9e5115f4a9760fa8a083bafe88ebd204
[INFO] checking stm32f3-copterust-0.12.3 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate stm32f3-copterust 0.12.3 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate stm32f3-copterust 0.12.3 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stm32f3-copterust 0.12.3
[INFO] finished tweaking crates.io crate stm32f3-copterust 0.12.3
[INFO] tweaked toml for crates.io crate stm32f3-copterust 0.12.3 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages
[INFO] [stderr]       Adding bare-metal v0.2.5 (latest: v1.0.0)
[INFO] [stderr]       Adding bitfield v0.13.2 (latest: v0.14.0)
[INFO] [stderr]       Adding cortex-m-rt v0.6.15 (latest: v0.7.3)
[INFO] [stderr]       Adding cortex-m-rt-macros v0.6.15 (latest: v0.7.0)
[INFO] [stderr]       Adding embedded-hal v0.2.7 (latest: v1.0.0)
[INFO] [stderr]       Adding nb v0.1.3 (latest: v1.1.0)
[INFO] [stderr]       Adding r0 v0.2.2 (latest: v1.0.0)
[INFO] [stderr]       Adding rustc_version v0.2.3 (latest: v0.4.0)
[INFO] [stderr]       Adding semver v0.9.0 (latest: v1.0.22)
[INFO] [stderr]       Adding semver-parser v0.7.0 (latest: v0.10.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e418a8bde6de025f104efbe7886e62aaa630ff9b48e657544f2b9fc176c5992
[INFO] running `Command { std: "docker" "start" "-a" "6e418a8bde6de025f104efbe7886e62aaa630ff9b48e657544f2b9fc176c5992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e418a8bde6de025f104efbe7886e62aaa630ff9b48e657544f2b9fc176c5992", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e418a8bde6de025f104efbe7886e62aaa630ff9b48e657544f2b9fc176c5992", kill_on_drop: false }`
[INFO] [stdout] 6e418a8bde6de025f104efbe7886e62aaa630ff9b48e657544f2b9fc176c5992
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d791a9bc408d01808eb1ed37a647f69ec7608c67e0573c95bbdd8c7e94f32bd
[INFO] running `Command { std: "docker" "start" "-a" "3d791a9bc408d01808eb1ed37a647f69ec7608c67e0573c95bbdd8c7e94f32bd", 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]     Checking bitfield v0.13.2
[INFO] [stderr]    Compiling stm32f3-copterust v0.12.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[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)]` on by default
[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)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.36s
[INFO] running `Command { std: "docker" "inspect" "3d791a9bc408d01808eb1ed37a647f69ec7608c67e0573c95bbdd8c7e94f32bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d791a9bc408d01808eb1ed37a647f69ec7608c67e0573c95bbdd8c7e94f32bd", kill_on_drop: false }`
[INFO] [stdout] 3d791a9bc408d01808eb1ed37a647f69ec7608c67e0573c95bbdd8c7e94f32bd