[INFO] fetching crate heapless 0.7.16...
[INFO] checking heapless-0.7.16 against try#dbe54b90b471ee86a3b006973bf90c6cbb93415f for pr-102091
[INFO] extracting crate heapless 0.7.16 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate heapless 0.7.16 on toolchain dbe54b90b471ee86a3b006973bf90c6cbb93415f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dbe54b90b471ee86a3b006973bf90c6cbb93415f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate heapless 0.7.16
[INFO] finished tweaking crates.io crate heapless 0.7.16
[INFO] tweaked toml for crates.io crate heapless 0.7.16 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dbe54b90b471ee86a3b006973bf90c6cbb93415f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dbe54b90b471ee86a3b006973bf90c6cbb93415f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:06bd2dc561ac9b9120e7d8112cca06cd3b1bded0ddb8515a4f6a39439d56c944" "/opt/rustwide/cargo-home/bin/cargo" "+dbe54b90b471ee86a3b006973bf90c6cbb93415f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16e5c618fdd26950a9ef41a411612bcd49d5e19ac987674690283e878838d3a5
[INFO] running `Command { std: "docker" "start" "-a" "16e5c618fdd26950a9ef41a411612bcd49d5e19ac987674690283e878838d3a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16e5c618fdd26950a9ef41a411612bcd49d5e19ac987674690283e878838d3a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e5c618fdd26950a9ef41a411612bcd49d5e19ac987674690283e878838d3a5", kill_on_drop: false }`
[INFO] [stdout] 16e5c618fdd26950a9ef41a411612bcd49d5e19ac987674690283e878838d3a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:06bd2dc561ac9b9120e7d8112cca06cd3b1bded0ddb8515a4f6a39439d56c944" "/opt/rustwide/cargo-home/bin/cargo" "+dbe54b90b471ee86a3b006973bf90c6cbb93415f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b86c688613fdfaa57b050b07c4f79db2bf578bad1ef8fa01cce300c788c63b3
[INFO] running `Command { std: "docker" "start" "-a" "7b86c688613fdfaa57b050b07c4f79db2bf578bad1ef8fa01cce300c788c63b3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling semver v1.0.14
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling syn v1.0.100
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking ufmt-write v0.1.0
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling heapless v0.7.16 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stdout] error: lint `const_err` has been removed: converted into hard error, see issue #71800 <https://github.com/rust-lang/rust/issues/71800> for more information
[INFO] [stdout]   --> src/lib.rs:75:9
[INFO] [stdout]    |
[INFO] [stdout] 75 | #![deny(const_err)]
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(renamed_and_removed_lints)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `heapless` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7b86c688613fdfaa57b050b07c4f79db2bf578bad1ef8fa01cce300c788c63b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b86c688613fdfaa57b050b07c4f79db2bf578bad1ef8fa01cce300c788c63b3", kill_on_drop: false }`
[INFO] [stdout] 7b86c688613fdfaa57b050b07c4f79db2bf578bad1ef8fa01cce300c788c63b3