[INFO] fetching crate ckb-std 0.7.4...
[INFO] building ckb-std-0.7.4 against master#d5c88c22807925c189328ef9d923c5d2b11a95b8 for pr-87066-3
[INFO] extracting crate ckb-std 0.7.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ckb-std 0.7.4 on toolchain d5c88c22807925c189328ef9d923c5d2b11a95b8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2/source/rust-toolchain
[INFO] started tweaking crates.io crate ckb-std 0.7.4
[INFO] finished tweaking crates.io crate ckb-std 0.7.4
[INFO] tweaked toml for crates.io crate ckb-std 0.7.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate ckb-std 0.7.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e208346f4b68a9c359c94474db82e4112a711276c1ba28714b7f6f48a3129a2
[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" "1e208346f4b68a9c359c94474db82e4112a711276c1ba28714b7f6f48a3129a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e208346f4b68a9c359c94474db82e4112a711276c1ba28714b7f6f48a3129a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e208346f4b68a9c359c94474db82e4112a711276c1ba28714b7f6f48a3129a2", kill_on_drop: false }`
[INFO] [stdout] 1e208346f4b68a9c359c94474db82e4112a711276c1ba28714b7f6f48a3129a2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 13820d56877cadcde476aab6e454e14a82b19a6ad6d35402cc6d7033c7e8fb3c
[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" "13820d56877cadcde476aab6e454e14a82b19a6ad6d35402cc6d7033c7e8fb3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]    Compiling buddy-alloc v0.4.1
[INFO] [stderr]    Compiling molecule v0.6.0
[INFO] [stderr]    Compiling ckb-standalone-types v0.0.1-pre.1
[INFO] [stderr]    Compiling ckb-std v0.7.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a0`
[INFO] [stdout]   --> src/syscalls/native.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |            ^^ help: if this is intentional, prefix it with an underscore: `_a0`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]   --> src/syscalls/native.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]   --> src/syscalls/native.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                              ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a3`
[INFO] [stdout]   --> src/syscalls/native.rs:10:39
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                       ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a4`
[INFO] [stdout]   --> src/syscalls/native.rs:10:48
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                ^^ help: if this is intentional, prefix it with an underscore: `_a4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a5`
[INFO] [stdout]   --> src/syscalls/native.rs:10:57
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                         ^^ help: if this is intentional, prefix it with an underscore: `_a5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a6`
[INFO] [stdout]   --> src/syscalls/native.rs:10:66
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                                  ^^ help: if this is intentional, prefix it with an underscore: `_a6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a7`
[INFO] [stdout]   --> src/syscalls/native.rs:10:75
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                                           ^^ help: if this is intentional, prefix it with an underscore: `_a7`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/syscalls/native.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     unsafe { syscall(code as u64, 0, 0, 0, 0, 0, 0, SYS_EXIT) };
[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/syscalls/native.rs:35:15
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let ret = unsafe {
[INFO] [stdout]    |               ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/syscalls/native.rs:414:5
[INFO] [stdout]     |
[INFO] [stdout] 414 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/syscalls/native.rs:469:15
[INFO] [stdout]     |
[INFO] [stdout] 469 |     let ret = unsafe {
[INFO] [stdout]     |               ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.02s
[INFO] running `Command { std: "docker" "inspect" "13820d56877cadcde476aab6e454e14a82b19a6ad6d35402cc6d7033c7e8fb3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13820d56877cadcde476aab6e454e14a82b19a6ad6d35402cc6d7033c7e8fb3c", kill_on_drop: false }`
[INFO] [stdout] 13820d56877cadcde476aab6e454e14a82b19a6ad6d35402cc6d7033c7e8fb3c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a7a9e967bb6ace9a7dc68d29ca58f508daa468f11b0e8e9821e44ed13124b11e
[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" "a7a9e967bb6ace9a7dc68d29ca58f508daa468f11b0e8e9821e44ed13124b11e", kill_on_drop: false }`
[INFO] [stderr]    Compiling ckb-std v0.7.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `a0`
[INFO] [stdout]   --> src/syscalls/native.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |            ^^ help: if this is intentional, prefix it with an underscore: `_a0`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]   --> src/syscalls/native.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]   --> src/syscalls/native.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                              ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a3`
[INFO] [stdout]   --> src/syscalls/native.rs:10:39
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                       ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a4`
[INFO] [stdout]   --> src/syscalls/native.rs:10:48
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                ^^ help: if this is intentional, prefix it with an underscore: `_a4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a5`
[INFO] [stdout]   --> src/syscalls/native.rs:10:57
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                         ^^ help: if this is intentional, prefix it with an underscore: `_a5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a6`
[INFO] [stdout]   --> src/syscalls/native.rs:10:66
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                                  ^^ help: if this is intentional, prefix it with an underscore: `_a6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a7`
[INFO] [stdout]   --> src/syscalls/native.rs:10:75
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                                           ^^ help: if this is intentional, prefix it with an underscore: `_a7`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/syscalls/native.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     unsafe { syscall(code as u64, 0, 0, 0, 0, 0, 0, SYS_EXIT) };
[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/syscalls/native.rs:35:15
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let ret = unsafe {
[INFO] [stdout]    |               ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/syscalls/native.rs:414:5
[INFO] [stdout]     |
[INFO] [stdout] 414 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/syscalls/native.rs:469:15
[INFO] [stdout]     |
[INFO] [stdout] 469 |     let ret = unsafe {
[INFO] [stdout]     |               ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a0`
[INFO] [stdout]   --> src/syscalls/native.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |            ^^ help: if this is intentional, prefix it with an underscore: `_a0`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a1`
[INFO] [stdout]   --> src/syscalls/native.rs:10:21
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                     ^^ help: if this is intentional, prefix it with an underscore: `_a1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a2`
[INFO] [stdout]   --> src/syscalls/native.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                              ^^ help: if this is intentional, prefix it with an underscore: `_a2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a3`
[INFO] [stdout]   --> src/syscalls/native.rs:10:39
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                       ^^ help: if this is intentional, prefix it with an underscore: `_a3`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a4`
[INFO] [stdout]   --> src/syscalls/native.rs:10:48
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                ^^ help: if this is intentional, prefix it with an underscore: `_a4`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a5`
[INFO] [stdout]   --> src/syscalls/native.rs:10:57
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                         ^^ help: if this is intentional, prefix it with an underscore: `_a5`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a6`
[INFO] [stdout]   --> src/syscalls/native.rs:10:66
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                                  ^^ help: if this is intentional, prefix it with an underscore: `_a6`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a7`
[INFO] [stdout]   --> src/syscalls/native.rs:10:75
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn syscall(a0: u64, a1: u64, a2: u64, a3: u64, a4: u64, a5: u64, a6: u64, a7: u64) -> u64 {
[INFO] [stdout]    |                                                                           ^^ help: if this is intentional, prefix it with an underscore: `_a7`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/syscalls/native.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     unsafe { syscall(code as u64, 0, 0, 0, 0, 0, 0, SYS_EXIT) };
[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/syscalls/native.rs:35:15
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let ret = unsafe {
[INFO] [stdout]    |               ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/syscalls/native.rs:414:5
[INFO] [stdout]     |
[INFO] [stdout] 414 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/syscalls/native.rs:469:15
[INFO] [stdout]     |
[INFO] [stdout] 469 |     let ret = unsafe {
[INFO] [stdout]     |               ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.0.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.1.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.10.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.11.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.2.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.3.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.4.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.5.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.6.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.7.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.8.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.9.rcgu.o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.4tzbkwq6ehl0eco8.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/ckb-std-93f18cede856932f/out" "-L" "/opt/rustwide/rustup-home/toolchains/d5c88c22807925c189328ef9d923c5d2b11a95b8/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libckb_std-e3d69b9048459892.rlib" "/opt/rustwide/target/debug/deps/libbuddy_alloc-73a319a9a149337e.rlib" "/opt/rustwide/target/debug/deps/libckb_standalone_types-db2db33ab97f516a.rlib" "/opt/rustwide/target/debug/deps/libmolecule-e874da1bc2a64bd9.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-81c3651d70dd4895.rlib" "/opt/rustwide/rustup-home/toolchains/d5c88c22807925c189328ef9d923c5d2b11a95b8/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-9ee1d5d15e6abbeb.rlib" "/opt/rustwide/rustup-home/toolchains/d5c88c22807925c189328ef9d923c5d2b11a95b8/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-52d5241975807511.rlib" "/opt/rustwide/rustup-home/toolchains/d5c88c22807925c189328ef9d923c5d2b11a95b8/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9924c22ae1efcf66.rlib" "/opt/rustwide/rustup-home/toolchains/d5c88c22807925c189328ef9d923c5d2b11a95b8/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-96219fb718f2f3e8.rlib" "-Wl,-Bdynamic" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/d5c88c22807925c189328ef9d923c5d2b11a95b8/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/examples/main-65f202c6a5ab04af" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.0.rcgu.o: in function `_start':
[INFO] [stdout]           /opt/rustwide/workdir/src/entry.rs:21: multiple definition of `_start'; /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
[INFO] [stdout]           /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
[INFO] [stdout]           (.text+0x16): undefined reference to `__libc_csu_fini'
[INFO] [stdout]           /usr/bin/ld: (.text+0x1d): undefined reference to `__libc_csu_init'
[INFO] [stdout]           /usr/bin/ld: (.text+0x2a): undefined reference to `__libc_start_main'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/rustup-home/toolchains/d5c88c22807925c189328ef9d923c5d2b11a95b8/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-9ee1d5d15e6abbeb.rlib(alloc-9ee1d5d15e6abbeb.alloc.9413cecc-cgu.0.rcgu.o): in function `alloc::fmt::format':
[INFO] [stdout]           /rustc/d5c88c22807925c189328ef9d923c5d2b11a95b8//library/alloc/src/fmt.rs:585: undefined reference to `_Unwind_Resume'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.0.rcgu.o: in function `main':
[INFO] [stdout]           /opt/rustwide/workdir/examples/main.rs:11: undefined reference to `_Unwind_Resume'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.0.rcgu.o: in function `rust_begin_unwind':
[INFO] [stdout]           /opt/rustwide/workdir/src/entry.rs:36: undefined reference to `_Unwind_Resume'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/examples/main-65f202c6a5ab04af.main.8481d012-cgu.8.rcgu.o: in function `<u8 as alloc::vec::spec_from_elem::SpecFromElem>::from_elem':
[INFO] [stdout]           /rustc/d5c88c22807925c189328ef9d923c5d2b11a95b8/library/alloc/src/vec/spec_from_elem.rs:37: undefined reference to `_Unwind_Resume'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libckb_std-e3d69b9048459892.rlib(ckb_std-e3d69b9048459892.ckb_std.b551c516-cgu.3.rcgu.o): in function `ckb_std::syscalls::native::debug':
[INFO] [stdout]           /opt/rustwide/workdir/src/syscalls/native.rs:411: undefined reference to `_Unwind_Resume'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libbuddy_alloc-73a319a9a149337e.rlib(buddy_alloc-73a319a9a149337e.buddy_alloc.a79d7e7f-cgu.1.rcgu.o):/opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/buddy-alloc-0.4.1/src/non_threadsafe_alloc.rs:33: more undefined references to `_Unwind_Resume' follow
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout]   = help: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified
[INFO] [stdout]   = note: use the `-l` flag to specify native libraries to link
[INFO] [stdout]   = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ckb-std` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a7a9e967bb6ace9a7dc68d29ca58f508daa468f11b0e8e9821e44ed13124b11e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7a9e967bb6ace9a7dc68d29ca58f508daa468f11b0e8e9821e44ed13124b11e", kill_on_drop: false }`
[INFO] [stdout] a7a9e967bb6ace9a7dc68d29ca58f508daa468f11b0e8e9821e44ed13124b11e