[INFO] fetching crate hexagon-e 0.1.5...
[INFO] testing hexagon-e-0.1.5 against 1.60.0 for beta-1.61-1
[INFO] extracting crate hexagon-e 0.1.5 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate hexagon-e 0.1.5 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hexagon-e 0.1.5
[INFO] finished tweaking crates.io crate hexagon-e 0.1.5
[INFO] tweaked toml for crates.io crate hexagon-e 0.1.5 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b121315d50a8d06da86a465f30d8ed91af6e6e0eaa50d415a955ca3a73ac9ab0
[INFO] running `Command { std: "docker" "start" "-a" "b121315d50a8d06da86a465f30d8ed91af6e6e0eaa50d415a955ca3a73ac9ab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b121315d50a8d06da86a465f30d8ed91af6e6e0eaa50d415a955ca3a73ac9ab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b121315d50a8d06da86a465f30d8ed91af6e6e0eaa50d415a955ca3a73ac9ab0", kill_on_drop: false }`
[INFO] [stdout] b121315d50a8d06da86a465f30d8ed91af6e6e0eaa50d415a955ca3a73ac9ab0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c16bd837d82adfe87fd49b859d130183f9aee2d5eac5bef0fbade1f906f42240
[INFO] running `Command { std: "docker" "start" "-a" "c16bd837d82adfe87fd49b859d130183f9aee2d5eac5bef0fbade1f906f42240", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling hexagon-e v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/vm.rs:449:64
[INFO] [stdout]     |
[INFO] [stdout] 449 |                 Opcode::I32Clz => run_unop!(self.env, i32, |v| unsafe { ::core::intrinsics::ctlz(v) }),
[INFO] [stdout]     |                                                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/vm.rs:450:64
[INFO] [stdout]     |
[INFO] [stdout] 450 |                 Opcode::I32Ctz => run_unop!(self.env, i32, |v| unsafe { ::core::intrinsics::cttz(v) }),
[INFO] [stdout]     |                                                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/vm.rs:451:67
[INFO] [stdout]     |
[INFO] [stdout] 451 |                 Opcode::I32Popcnt => run_unop!(self.env, i32, |v| unsafe { ::core::intrinsics::ctpop(v) }),
[INFO] [stdout]     |                                                                   ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/vm.rs:517:64
[INFO] [stdout]     |
[INFO] [stdout] 517 |                 Opcode::I64Clz => run_unop!(self.env, i64, |v| unsafe { ::core::intrinsics::ctlz(v) }),
[INFO] [stdout]     |                                                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/vm.rs:518:64
[INFO] [stdout]     |
[INFO] [stdout] 518 |                 Opcode::I64Ctz => run_unop!(self.env, i64, |v| unsafe { ::core::intrinsics::cttz(v) }),
[INFO] [stdout]     |                                                                ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/vm.rs:519:67
[INFO] [stdout]     |
[INFO] [stdout] 519 |                 Opcode::I64Popcnt => run_unop!(self.env, i64, |v| unsafe { ::core::intrinsics::ctpop(v) }),
[INFO] [stdout]     |                                                                   ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(core_intrinsics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hexagon-e` due to 2 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "c16bd837d82adfe87fd49b859d130183f9aee2d5eac5bef0fbade1f906f42240", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c16bd837d82adfe87fd49b859d130183f9aee2d5eac5bef0fbade1f906f42240", kill_on_drop: false }`
[INFO] [stdout] c16bd837d82adfe87fd49b859d130183f9aee2d5eac5bef0fbade1f906f42240