[INFO] fetching crate minimult_cortex-m 0.3.3... [INFO] checking minimult_cortex-m-0.3.3 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2 [INFO] extracting crate minimult_cortex-m 0.3.3 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate minimult_cortex-m 0.3.3 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate minimult_cortex-m 0.3.3 [INFO] finished tweaking crates.io crate minimult_cortex-m 0.3.3 [INFO] tweaked toml for crates.io crate minimult_cortex-m 0.3.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate crates.io crate minimult_cortex-m 0.3.3 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded cortex-m-semihosting v0.3.5 [INFO] [stderr] Downloaded bare-metal v0.2.5 [INFO] [stderr] Downloaded semver v0.9.0 [INFO] [stderr] Downloaded vcell v0.1.2 [INFO] [stderr] Downloaded volatile-register v0.2.0 [INFO] [stderr] Downloaded panic-semihosting v0.5.3 [INFO] [stderr] Downloaded rustc_version v0.2.3 [INFO] [stderr] Downloaded rand_core v0.3.1 [INFO] [stderr] Downloaded generic-array v0.12.3 [INFO] [stderr] Downloaded as-slice v0.1.0 [INFO] [stderr] Downloaded cortex-m v0.6.1 [INFO] [stderr] Downloaded quote v1.0.2 [INFO] [stderr] Downloaded proc-macro2 v1.0.6 [INFO] [stderr] Downloaded num-integer v0.1.41 [INFO] [stderr] Downloaded rand_core v0.4.2 [INFO] [stderr] Downloaded stable_deref_trait v1.1.1 [INFO] [stderr] Downloaded syn v1.0.8 [INFO] [stderr] Downloaded num-traits v0.2.9 [INFO] [stderr] Downloaded rand v0.5.6 [INFO] [stderr] Downloaded unicode-xid v0.2.0 [INFO] [stderr] Downloaded cortex-m-rt v0.6.10 [INFO] [stderr] Downloaded aligned v0.3.1 [INFO] [stderr] Downloaded semver-parser v0.7.0 [INFO] [stderr] Downloaded cortex-m-rt-macros v0.1.6 [INFO] [stderr] Downloaded r0 v0.2.2 [INFO] [stderr] Downloaded autocfg v0.1.7 [INFO] [stderr] Downloaded typenum v1.11.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0c4293d490f11ab832584d3c52811af3cc4bb7da9becc9966d4b468166300a3d [INFO] running `Command { std: "docker" "start" "-a" "0c4293d490f11ab832584d3c52811af3cc4bb7da9becc9966d4b468166300a3d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0c4293d490f11ab832584d3c52811af3cc4bb7da9becc9966d4b468166300a3d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0c4293d490f11ab832584d3c52811af3cc4bb7da9becc9966d4b468166300a3d", kill_on_drop: false }` [INFO] [stdout] 0c4293d490f11ab832584d3c52811af3cc4bb7da9becc9966d4b468166300a3d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ec758ffcb000093b2b4abb7706e4386890f52e1e8037e83534c19e34b16a377c [INFO] running `Command { std: "docker" "start" "-a" "ec758ffcb000093b2b4abb7706e4386890f52e1e8037e83534c19e34b16a377c", kill_on_drop: false }` [INFO] [stderr] Compiling typenum v1.11.2 [INFO] [stderr] Compiling semver-parser v0.7.0 [INFO] [stderr] Compiling cortex-m v0.6.1 [INFO] [stderr] Compiling autocfg v0.1.7 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Compiling proc-macro2 v1.0.6 [INFO] [stderr] Checking vcell v0.1.2 [INFO] [stderr] Compiling unicode-xid v0.2.0 [INFO] [stderr] Compiling rand_core v0.4.2 [INFO] [stderr] Compiling syn v1.0.8 [INFO] [stderr] Compiling cortex-m-semihosting v0.3.5 [INFO] [stderr] Compiling minimult_cortex-m v0.3.3 (/opt/rustwide/workdir) [INFO] [stderr] Compiling cortex-m-rt v0.6.10 [INFO] [stderr] Checking r0 v0.2.2 [INFO] [stderr] Checking volatile-register v0.2.0 [INFO] [stderr] Compiling rand_core v0.3.1 [INFO] [stderr] Compiling semver v0.9.0 [INFO] [stderr] Compiling rand v0.5.6 [INFO] [stderr] Compiling num-traits v0.2.9 [INFO] [stderr] Compiling num-integer v0.1.41 [INFO] [stderr] Compiling rustc_version v0.2.3 [INFO] [stderr] Compiling bare-metal v0.2.5 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Checking generic-array v0.12.3 [INFO] [stderr] Checking as-slice v0.1.0 [INFO] [stderr] Checking aligned v0.3.1 [INFO] [stdout] warning: creating a mutable reference to mutable static is discouraged [INFO] [stdout] --> src/kernel.rs:43:24 [INFO] [stdout] | [INFO] [stdout] 43 | let ptr = unsafe { &mut ARG_RET }; [INFO] [stdout] | ^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see issue #114447 [INFO] [stdout] = note: this will be a hard error in the 2024 edition [INFO] [stdout] = note: this mutable reference has lifetime `'static`, but if the static gets accessed (read or written) by any other means, or any other reference is created, then any further use of this mutable reference is Undefined Behavior [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] help: use `addr_of_mut!` instead to create a raw pointer [INFO] [stdout] | [INFO] [stdout] 43 | let ptr = unsafe { addr_of_mut!(ARG_RET) }; [INFO] [stdout] | ~~~~~~~~~~~~~ + [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking panic-semihosting v0.5.3 [INFO] [stdout] warning: panic message contains an unused formatting placeholder [INFO] [stdout] --> src/kernel.rs:345:22 [INFO] [stdout] | [INFO] [stdout] 345 | "tid {}: stack shortage"); [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: this message is not used as a format string when given without arguments, but will be in Rust 2021 [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: add the missing argument [INFO] [stdout] | [INFO] [stdout] 345 | "tid {}: stack shortage", ...); [INFO] [stdout] | +++++ [INFO] [stdout] help: or add a "{}" format string to use the message literally [INFO] [stdout] | [INFO] [stdout] 345 | "{}", "tid {}: stack shortage"); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling cortex-m-rt-macros v0.1.6 [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: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `minimult_cortex-m` (example "usage") due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: creating a mutable reference to mutable static is discouraged [INFO] [stdout] --> src/kernel.rs:43:24 [INFO] [stdout] | [INFO] [stdout] 43 | let ptr = unsafe { &mut ARG_RET }; [INFO] [stdout] | ^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see issue #114447 [INFO] [stdout] = note: this will be a hard error in the 2024 edition [INFO] [stdout] = note: this mutable reference has lifetime `'static`, but if the static gets accessed (read or written) by any other means, or any other reference is created, then any further use of this mutable reference is Undefined Behavior [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] help: use `addr_of_mut!` instead to create a raw pointer [INFO] [stdout] | [INFO] [stdout] 43 | let ptr = unsafe { addr_of_mut!(ARG_RET) }; [INFO] [stdout] | ~~~~~~~~~~~~~ + [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message contains an unused formatting placeholder [INFO] [stdout] --> src/kernel.rs:345:22 [INFO] [stdout] | [INFO] [stdout] 345 | "tid {}: stack shortage"); [INFO] [stdout] | ^^ [INFO] [stdout] | [INFO] [stdout] = note: this message is not used as a format string when given without arguments, but will be in Rust 2021 [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` on by default [INFO] [stdout] help: add the missing argument [INFO] [stdout] | [INFO] [stdout] 345 | "tid {}: stack shortage", ...); [INFO] [stdout] | +++++ [INFO] [stdout] help: or add a "{}" format string to use the message literally [INFO] [stdout] | [INFO] [stdout] 345 | "{}", "tid {}: stack shortage"); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "ec758ffcb000093b2b4abb7706e4386890f52e1e8037e83534c19e34b16a377c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ec758ffcb000093b2b4abb7706e4386890f52e1e8037e83534c19e34b16a377c", kill_on_drop: false }` [INFO] [stdout] ec758ffcb000093b2b4abb7706e4386890f52e1e8037e83534c19e34b16a377c