[INFO] fetching crate direct-asm 0.0.1-alpha...
[INFO] checking direct-asm-0.0.1-alpha against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] extracting crate direct-asm 0.0.1-alpha into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate direct-asm 0.0.1-alpha on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate direct-asm 0.0.1-alpha
[INFO] finished tweaking crates.io crate direct-asm 0.0.1-alpha
[INFO] tweaked toml for crates.io crate direct-asm 0.0.1-alpha written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "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" "+339e19697a39a78f4d669c217b7d21109215de41" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13e1829ce7aec5db3cd0c48f31345a9309315a0b88ba03e24725630f970ce6a5
[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" "13e1829ce7aec5db3cd0c48f31345a9309315a0b88ba03e24725630f970ce6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13e1829ce7aec5db3cd0c48f31345a9309315a0b88ba03e24725630f970ce6a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13e1829ce7aec5db3cd0c48f31345a9309315a0b88ba03e24725630f970ce6a5", kill_on_drop: false }`
[INFO] [stdout] 13e1829ce7aec5db3cd0c48f31345a9309315a0b88ba03e24725630f970ce6a5
[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" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ef2094c2fa387d3f46731c113033b564184db19524b75942077e104cfdb0a6d
[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" "5ef2094c2fa387d3f46731c113033b564184db19524b75942077e104cfdb0a6d", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling syn v1.0.59
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking proc-macro2 v1.0.24
[INFO] [stderr]     Checking dynasm-lib v0.1.0-alpha
[INFO] [stderr]     Checking quote v1.0.8
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking direct-asm v0.0.1-alpha (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `st`
[INFO] [stdout]    --> src/att.rs:324:17
[INFO] [stdout]     |
[INFO] [stdout] 324 |     fn from_str(st: &str) -> Result<Self, Error> {
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_st`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_statement`
[INFO] [stdout]    --> src/att.rs:193:12
[INFO] [stdout]     |
[INFO] [stdout] 193 |     pub fn as_statement(&self) -> Option<&Statement> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `as_directive`
[INFO] [stdout]    --> src/att.rs:200:12
[INFO] [stdout]     |
[INFO] [stdout] 200 |     pub fn as_directive(&self) -> Option<&Directive> {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `st`
[INFO] [stdout]    --> src/att.rs:324:17
[INFO] [stdout]     |
[INFO] [stdout] 324 |     fn from_str(st: &str) -> Result<Self, Error> {
[INFO] [stdout]     |                 ^^ help: if this is intentional, prefix it with an underscore: `_st`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.88s
[INFO] running `Command { std: "docker" "inspect" "5ef2094c2fa387d3f46731c113033b564184db19524b75942077e104cfdb0a6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ef2094c2fa387d3f46731c113033b564184db19524b75942077e104cfdb0a6d", kill_on_drop: false }`
[INFO] [stdout] 5ef2094c2fa387d3f46731c113033b564184db19524b75942077e104cfdb0a6d