[INFO] fetching crate mfxstm32l152 0.0.1...
[INFO] checking mfxstm32l152-0.0.1 against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] extracting crate mfxstm32l152 0.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate mfxstm32l152 0.0.1 on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mfxstm32l152 0.0.1
[INFO] finished tweaking crates.io crate mfxstm32l152 0.0.1
[INFO] tweaked toml for crates.io crate mfxstm32l152 0.0.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] [stderr]       Adding cast v0.2.7 (latest: v0.3.0)
[INFO] [stderr]       Adding embedded-hal v0.2.7 (latest: v1.0.0)
[INFO] [stderr]       Adding nb v0.1.3 (latest: v1.1.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded i2c-hal-tools v0.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 512efdec56ec990b8f408ba62a76483826212ed1d981644902e3913fba264379
[INFO] running `Command { std: "docker" "start" "-a" "512efdec56ec990b8f408ba62a76483826212ed1d981644902e3913fba264379", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "512efdec56ec990b8f408ba62a76483826212ed1d981644902e3913fba264379", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "512efdec56ec990b8f408ba62a76483826212ed1d981644902e3913fba264379", kill_on_drop: false }`
[INFO] [stdout] 512efdec56ec990b8f408ba62a76483826212ed1d981644902e3913fba264379
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f36d36ecb3189311d8eb5cb0a11fd31ef6628eb6e6bbdc4517b7fffcbbbb259a
[INFO] running `Command { std: "docker" "start" "-a" "f36d36ecb3189311d8eb5cb0a11fd31ef6628eb6e6bbdc4517b7fffcbbbb259a", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.23
[INFO] [stderr]     Checking nb v1.1.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]     Checking i2c-hal-tools v0.0.2
[INFO] [stderr]     Checking mfxstm32l152 v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `cortex_m`
[INFO] [stdout]  --> examples/idd.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | extern crate cortex_m;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `cortex_m_rt`
[INFO] [stdout]   --> examples/idd.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | extern crate cortex_m_rt as rt;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `panic_semihosting`
[INFO] [stdout]   --> examples/idd.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | extern crate panic_semihosting;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `stm32l4xx_hal`
[INFO] [stdout]   --> examples/idd.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | extern crate stm32l4xx_hal as hal;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `exception` in this scope
[INFO] [stdout]    --> examples/idd.rs:194:3
[INFO] [stdout]     |
[INFO] [stdout] 194 | #[exception]
[INFO] [stdout]     |   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot find attribute `entry` in this scope
[INFO] [stdout]   --> examples/idd.rs:69:3
[INFO] [stdout]    |
[INFO] [stdout] 69 | #[entry]
[INFO] [stdout]    |   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[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] error[E0599]: no method named `khz` found for type `{integer}` in the current scope
[INFO] [stdout]    --> examples/idd.rs:101:49
[INFO] [stdout]     |
[INFO] [stdout] 101 |     let i2c = I2c::i2c2(p.I2C2, (scl, sda), 100.khz(), clocks, &mut rcc.apb1r1);
[INFO] [stdout]     |                                                 ^^^ method not found in `{integer}`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `bps` found for type `{integer}` in the current scope
[INFO] [stdout]    --> examples/idd.rs:106:61
[INFO] [stdout]     |
[INFO] [stdout] 106 |     let serial = Serial::usart2(p.USART2, (tx, rx), 115_200.bps(), clocks, &mut rcc.apb1r1);
[INFO] [stdout]     |                                                             ^^^ method not found in `{integer}`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0463, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mfxstm32l152` (example "idd") due to 11 previous errors
[INFO] running `Command { std: "docker" "inspect" "f36d36ecb3189311d8eb5cb0a11fd31ef6628eb6e6bbdc4517b7fffcbbbb259a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f36d36ecb3189311d8eb5cb0a11fd31ef6628eb6e6bbdc4517b7fffcbbbb259a", kill_on_drop: false }`
[INFO] [stdout] f36d36ecb3189311d8eb5cb0a11fd31ef6628eb6e6bbdc4517b7fffcbbbb259a