[INFO] cloning repository https://github.com/smbolton/stm32f3-oscilloscope
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/smbolton/stm32f3-oscilloscope" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmbolton%2Fstm32f3-oscilloscope", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmbolton%2Fstm32f3-oscilloscope'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 06443bfa64375d1f576aa297186e88d31dc284a6
[INFO] checking smbolton/stm32f3-oscilloscope against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsmbolton%2Fstm32f3-oscilloscope" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/smbolton/stm32f3-oscilloscope on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-14/source/.cargo/config
[INFO] started tweaking git repo https://github.com/smbolton/stm32f3-oscilloscope
[INFO] finished tweaking git repo https://github.com/smbolton/stm32f3-oscilloscope
[INFO] tweaked toml for git repo https://github.com/smbolton/stm32f3-oscilloscope written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/smbolton/stm32f3-oscilloscope already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f994e9db5bb89d91ad45b0622f3ca7bea4168db7f699d4a5a7e74694ff4051a5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f994e9db5bb89d91ad45b0622f3ca7bea4168db7f699d4a5a7e74694ff4051a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f994e9db5bb89d91ad45b0622f3ca7bea4168db7f699d4a5a7e74694ff4051a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f994e9db5bb89d91ad45b0622f3ca7bea4168db7f699d4a5a7e74694ff4051a5", kill_on_drop: false }`
[INFO] [stdout] f994e9db5bb89d91ad45b0622f3ca7bea4168db7f699d4a5a7e74694ff4051a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 63c657875f40506e1035895fa201d550a6077ca05b4a8f756bfbcbc2375d44a4
[INFO] running `Command { std: "docker" "start" "-a" "63c657875f40506e1035895fa201d550a6077ca05b4a8f756bfbcbc2375d44a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m v0.2.11
[INFO] [stderr]     Checking vcell v0.1.0
[INFO] [stderr]    Compiling cortex-m-rt v0.2.5
[INFO] [stderr]     Checking aligned v0.1.1
[INFO] [stderr]     Checking cortex-m-semihosting v0.1.3
[INFO] [stderr]    Compiling gcc v0.3.51
[INFO] [stderr]     Checking r0 v0.2.1
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stdout] error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/aligned-0.1.1/src/lib.rs:168:22
[INFO] [stdout]     |
[INFO] [stdout] 168 | pub const fn Aligned<ALIGNMENT, ARRAY>(
[INFO] [stdout]     |                      ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
[INFO] [stdout]     = help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aligned`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0259]: the name `compiler_builtins` is defined multiple times
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-rt-0.2.5/src/lib.rs:160:1
[INFO] [stdout]     |
[INFO] [stdout] 160 | extern crate compiler_builtins;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `compiler_builtins` reimported here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `compiler_builtins` must be defined only once in the type namespace of this module
[INFO] [stdout] help: you can use `as` to change the binding name of the import
[INFO] [stdout]     |
[INFO] [stdout] 160 | extern crate compiler_builtins as other_compiler_builtins;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0522]: definition of an unknown language item: `panic_fmt`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-rt-0.2.5/src/lang_items.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #[lang = "panic_fmt"]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^ definition of unknown language item `panic_fmt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-rt-0.2.5/src/lib.rs:160:1
[INFO] [stdout]     |
[INFO] [stdout] 160 | extern crate compiler_builtins;
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout]     = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0259, E0522, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0259`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "63c657875f40506e1035895fa201d550a6077ca05b4a8f756bfbcbc2375d44a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63c657875f40506e1035895fa201d550a6077ca05b4a8f756bfbcbc2375d44a4", kill_on_drop: false }`
[INFO] [stdout] 63c657875f40506e1035895fa201d550a6077ca05b4a8f756bfbcbc2375d44a4