[INFO] fetching crate wasmer-singlepass-backend-fl 0.17.0...
[INFO] checking wasmer-singlepass-backend-fl-0.17.0 against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] extracting crate wasmer-singlepass-backend-fl 0.17.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate wasmer-singlepass-backend-fl 0.17.0 on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasmer-singlepass-backend-fl 0.17.0
[INFO] finished tweaking crates.io crate wasmer-singlepass-backend-fl 0.17.0
[INFO] tweaked toml for crates.io crate wasmer-singlepass-backend-fl 0.17.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9575a7e457860768b60dd2d635ee97ad820213c8b00dbc6e2ca64e4a9c754dd
[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" "e9575a7e457860768b60dd2d635ee97ad820213c8b00dbc6e2ca64e4a9c754dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9575a7e457860768b60dd2d635ee97ad820213c8b00dbc6e2ca64e4a9c754dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9575a7e457860768b60dd2d635ee97ad820213c8b00dbc6e2ca64e4a9c754dd", kill_on_drop: false }`
[INFO] [stdout] e9575a7e457860768b60dd2d635ee97ad820213c8b00dbc6e2ca64e4a9c754dd
[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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 789cbcadad3f41adc8ef17eeebc68c65e3477295f3d8281a5b38cc0bf33b14a5
[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" "789cbcadad3f41adc8ef17eeebc68c65e3477295f3d8281a5b38cc0bf33b14a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.90
[INFO] [stderr]    Compiling serde v1.0.124
[INFO] [stderr]    Compiling arrayref v0.3.6
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking subtle v2.4.0
[INFO] [stderr]    Compiling nix v0.15.0
[INFO] [stderr]    Compiling target-lexicon v0.10.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking constant_time_eq v0.1.5
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]     Checking wasmparser v0.51.4
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling blake3 v0.3.7
[INFO] [stderr]    Compiling typenum v1.13.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking generic-array v0.12.4
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking crypto-mac v0.8.0
[INFO] [stderr]     Checking digest v0.8.1
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.64
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling digest v0.9.0
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking errno v0.2.7
[INFO] [stderr]     Checking page_size v0.4.2
[INFO] [stderr]    Compiling wasmer-runtime-core-fl v0.17.0
[INFO] [stderr]     Checking dynasmrt v0.5.2
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking indexmap v1.6.2
[INFO] [stderr]     Checking bincode v1.3.2
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking serde-bench v0.0.7
[INFO] [stderr]    Compiling serde_derive v1.0.124
[INFO] [stderr]    Compiling dynasm v0.5.2
[INFO] [stderr]     Checking wasmer-singlepass-backend-fl v0.17.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: field is never read: `addr_rax`
[INFO] [stdout]    --> src/codegen_x64.rs:473:13
[INFO] [stdout]     |
[INFO] [stdout] 473 |             addr_rax: u64,
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:2:5
[INFO] [stdout]     |
[INFO] [stdout] 2   |     dead_code,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field is never read: `addr_r11`
[INFO] [stdout]    --> src/codegen_x64.rs:475:13
[INFO] [stdout]     |
[INFO] [stdout] 475 |             addr_r11: u64,
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `wasmer-singlepass-backend-fl`
[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: field is never read: `addr_rax`
[INFO] [stdout]    --> src/codegen_x64.rs:473:13
[INFO] [stdout]     |
[INFO] [stdout] 473 |             addr_rax: u64,
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:2:5
[INFO] [stdout]     |
[INFO] [stdout] 2   |     dead_code,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field is never read: `addr_r11`
[INFO] [stdout]    --> src/codegen_x64.rs:475:13
[INFO] [stdout]     |
[INFO] [stdout] 475 |             addr_r11: u64,
[INFO] [stdout]     |             ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "789cbcadad3f41adc8ef17eeebc68c65e3477295f3d8281a5b38cc0bf33b14a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "789cbcadad3f41adc8ef17eeebc68c65e3477295f3d8281a5b38cc0bf33b14a5", kill_on_drop: false }`
[INFO] [stdout] 789cbcadad3f41adc8ef17eeebc68c65e3477295f3d8281a5b38cc0bf33b14a5