[INFO] fetching crate linux 0.0.1...
[INFO] testing linux-0.0.1 against 1.54.0 for beta-1.55-1
[INFO] extracting crate linux 0.0.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate linux 0.0.1 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linux 0.0.1
[INFO] finished tweaking crates.io crate linux 0.0.1
[INFO] tweaked toml for crates.io crate linux 0.0.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "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" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21e11015c930792c714908eb0d1a8c37500a721ec4e830cadd934ca19ff68b2f
[INFO] running `Command { std: "docker" "start" "-a" "21e11015c930792c714908eb0d1a8c37500a721ec4e830cadd934ca19ff68b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21e11015c930792c714908eb0d1a8c37500a721ec4e830cadd934ca19ff68b2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21e11015c930792c714908eb0d1a8c37500a721ec4e830cadd934ca19ff68b2f", kill_on_drop: false }`
[INFO] [stdout] 21e11015c930792c714908eb0d1a8c37500a721ec4e830cadd934ca19ff68b2f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90814ffdf2f3a1686d0cab8547f4a4ed7773150ba9a088019a1dbf3cbedca39b
[INFO] running `Command { std: "docker" "start" "-a" "90814ffdf2f3a1686d0cab8547f4a4ed7773150ba9a088019a1dbf3cbedca39b", kill_on_drop: false }`
[INFO] [stderr]    Compiling linux-macros v0.0.1
[INFO] [stderr]    Compiling linux v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> src/syscall/raw/x86_64.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |           asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]    |           ^---
[INFO] [stdout]    |           |
[INFO] [stdout]    |  _________help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 71 | |                        : "{rax}"(n)
[INFO] [stdout] 72 | |                        : "rcx", "r11", "memory"
[INFO] [stdout] 73 | |                        : "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]   --> src/syscall/raw/x86_64.rs:80:9
[INFO] [stdout]    |
[INFO] [stdout] 80 |           asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]    |           ^---
[INFO] [stdout]    |           |
[INFO] [stdout]    |  _________help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 81 | |                        : "{rax}"(n), "{rdi}"(a1)
[INFO] [stdout] 82 | |                        : "rcx", "r11", "memory"
[INFO] [stdout] 83 | |                        : "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]   --> src/syscall/raw/x86_64.rs:90:9
[INFO] [stdout]    |
[INFO] [stdout] 90 |           asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]    |           ^---
[INFO] [stdout]    |           |
[INFO] [stdout]    |  _________help: replace with: `llvm_asm!`
[INFO] [stdout]    | |
[INFO] [stdout] 91 | |                        : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2)
[INFO] [stdout] 92 | |                        : "rcx", "r11", "memory"
[INFO] [stdout] 93 | |                        : "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]    --> src/syscall/raw/x86_64.rs:100:9
[INFO] [stdout]     |
[INFO] [stdout] 100 |           asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]     |           ^---
[INFO] [stdout]     |           |
[INFO] [stdout]     |  _________help: replace with: `llvm_asm!`
[INFO] [stdout]     | |
[INFO] [stdout] 101 | |                        : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3)
[INFO] [stdout] 102 | |                        : "rcx", "r11", "memory"
[INFO] [stdout] 103 | |                        : "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]    --> src/syscall/raw/x86_64.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |           asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]     |           ^---
[INFO] [stdout]     |           |
[INFO] [stdout]     |  _________help: replace with: `llvm_asm!`
[INFO] [stdout]     | |
[INFO] [stdout] 111 | |                        : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3),
[INFO] [stdout] 112 | |                          "{r10}"(a4)
[INFO] [stdout] 113 | |                        : "rcx", "r11", "memory"
[INFO] [stdout] 114 | |                        : "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]    --> src/syscall/raw/x86_64.rs:121:9
[INFO] [stdout]     |
[INFO] [stdout] 121 |           asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]     |           ^---
[INFO] [stdout]     |           |
[INFO] [stdout]     |  _________help: replace with: `llvm_asm!`
[INFO] [stdout]     | |
[INFO] [stdout] 122 | |                        : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3),
[INFO] [stdout] 123 | |                          "{r10}"(a4), "{r8}"(a5)
[INFO] [stdout] 124 | |                        : "rcx", "r11", "memory"
[INFO] [stdout] 125 | |                        : "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]    --> src/syscall/raw/x86_64.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |           asm!("syscall" : "={rax}"(ret)
[INFO] [stdout]     |           ^---
[INFO] [stdout]     |           |
[INFO] [stdout]     |  _________help: replace with: `llvm_asm!`
[INFO] [stdout]     | |
[INFO] [stdout] 134 | |                        : "{rax}"(n), "{rdi}"(a1), "{rsi}"(a2), "{rdx}"(a3),
[INFO] [stdout] 135 | |                          "{r10}"(a4), "{r8}"(a5), "{r9}"(a6)
[INFO] [stdout] 136 | |                        : "rcx", "r11", "memory"
[INFO] [stdout] 137 | |                        : "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: cannot find attribute `structural_match` in this scope
[INFO] [stdout]   --> src/util/error.rs:49:3
[INFO] [stdout]    |
[INFO] [stdout] 49 | #[structural_match]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(asm, structural_match, read_initializer)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 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 `linux`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "90814ffdf2f3a1686d0cab8547f4a4ed7773150ba9a088019a1dbf3cbedca39b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90814ffdf2f3a1686d0cab8547f4a4ed7773150ba9a088019a1dbf3cbedca39b", kill_on_drop: false }`
[INFO] [stdout] 90814ffdf2f3a1686d0cab8547f4a4ed7773150ba9a088019a1dbf3cbedca39b
