[INFO] cloning repository https://github.com/SchrodingerZhu/toylibc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SchrodingerZhu/toylibc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchrodingerZhu%2Ftoylibc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchrodingerZhu%2Ftoylibc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 30861c036b0b1166e4a86b99e6e195239a9a8e4d
[INFO] documenting SchrodingerZhu/toylibc against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSchrodingerZhu%2Ftoylibc" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/SchrodingerZhu/toylibc on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] started tweaking git repo https://github.com/SchrodingerZhu/toylibc
[INFO] finished tweaking git repo https://github.com/SchrodingerZhu/toylibc
[INFO] tweaked toml for git repo https://github.com/SchrodingerZhu/toylibc written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/SchrodingerZhu/toylibc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5bdf4b07f257880057900750133b28e58edd8f6abb5ace96d84591c74677291
[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" "c5bdf4b07f257880057900750133b28e58edd8f6abb5ace96d84591c74677291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5bdf4b07f257880057900750133b28e58edd8f6abb5ace96d84591c74677291", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5bdf4b07f257880057900750133b28e58edd8f6abb5ace96d84591c74677291", kill_on_drop: false }`
[INFO] [stdout] c5bdf4b07f257880057900750133b28e58edd8f6abb5ace96d84591c74677291
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "RUSTDOCFLAGS=--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2a823aadcd0a24fca715e688b8f60e2d369162aee30dcc99d855465a83efff40
[INFO] running `Command { std: "docker" "start" "-a" "2a823aadcd0a24fca715e688b8f60e2d369162aee30dcc99d855465a83efff40", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking smallvec v1.1.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.2.0
[INFO] [stderr]     Checking libm v0.2.1
[INFO] [stderr]     Checking num-traits v0.2.10
[INFO] [stderr]     Checking packed_simd v0.3.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling syscalls v0.1.4
[INFO] [stderr]     Checking lock_api v0.3.2
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscalls-0.1.4/src/helper.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |       asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 16 | |                    : "{eax}"(nr as i32)
[INFO] [stdout] 17 | |                    : "rcx", "r11", "memory"
[INFO] [stdout] 18 | |                    : "volatile");
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscalls-0.1.4/src/helper.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |       asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 26 | |                    : "{eax}"(nr as i32), "{rdi}"(a1)
[INFO] [stdout] 27 | |                    : "rcx", "r11", "memory"
[INFO] [stdout] 28 | |                    : "volatile");
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscalls-0.1.4/src/helper.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |       asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 36 | |                    : "{eax}"(nr as i32), "{rdi}"(a1), "{rsi}"(a2)
[INFO] [stdout] 37 | |                    : "rcx", "r11", "memory"
[INFO] [stdout] 38 | |                    : "volatile");
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscalls-0.1.4/src/helper.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |       asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 51 | |                    : "{eax}"(nr as i32), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3)
[INFO] [stdout] 52 | |                    : "rcx", "r11", "memory"
[INFO] [stdout] 53 | |                    : "volatile");
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscalls-0.1.4/src/helper.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |       asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 67 | |                    : "{eax}"(nr as i32), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3),
[INFO] [stdout] 68 | |                      "{r10}"(a4)
[INFO] [stdout] 69 | |                    : "rcx", "r11", "memory"
[INFO] [stdout] 70 | |                    : "volatile");
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscalls-0.1.4/src/helper.rs:84:5
[INFO] [stdout]    |
[INFO] [stdout] 84 |       asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]    |       ^---
[INFO] [stdout]    |       |
[INFO] [stdout]    |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 85 | |                    : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3),
[INFO] [stdout] 86 | |                      "{r10}"(a4), "{r8}"(a5)
[INFO] [stdout] 87 | |                    : "rcx", "r11", "memory"
[INFO] [stdout] 88 | |                    : "volatile");
[INFO] [stdout]    | |_________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscalls-0.1.4/src/helper.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 |       asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]     |       ^---
[INFO] [stdout]     |       |
[INFO] [stdout]     |  _____help: replace with: `llvm_asm!`
[INFO] [stdout]     | |
[INFO] [stdout] 104 | |                    : "{eax}"(nr as i32), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3),
[INFO] [stdout] 105 | |                      "{r10}"(a4), "{r8}"(a5), "{r9}"(a6)
[INFO] [stdout] 106 | |                    : "rcx", "r11", "memory"
[INFO] [stdout] 107 | |                    : "volatile");
[INFO] [stdout]     | |_________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]     = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/syscalls-0.1.4/src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `syscalls`.
[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[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/packed_simd-0.3.3/src/lib.rs:202:1
[INFO] [stdout]     |
[INFO] [stdout] 202 | / #![feature(
[INFO] [stdout] 203 | |     repr_simd,
[INFO] [stdout] 204 | |     const_fn,
[INFO] [stdout] 205 | |     platform_intrinsics,
[INFO] [stdout] ...   |
[INFO] [stdout] 215 | |     custom_inner_attributes
[INFO] [stdout] 216 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2a823aadcd0a24fca715e688b8f60e2d369162aee30dcc99d855465a83efff40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a823aadcd0a24fca715e688b8f60e2d369162aee30dcc99d855465a83efff40", kill_on_drop: false }`
[INFO] [stdout] 2a823aadcd0a24fca715e688b8f60e2d369162aee30dcc99d855465a83efff40
