[INFO] cloning repository https://github.com/Idolf/syscall-challenge
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Idolf/syscall-challenge" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIdolf%2Fsyscall-challenge", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIdolf%2Fsyscall-challenge'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec63f361e67560791d5209106eeac6ea40df8023
[INFO] checking Idolf/syscall-challenge against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FIdolf%2Fsyscall-challenge" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Idolf/syscall-challenge on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Idolf/syscall-challenge
[INFO] finished tweaking git repo https://github.com/Idolf/syscall-challenge
[INFO] tweaked toml for git repo https://github.com/Idolf/syscall-challenge written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/Idolf/syscall-challenge already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 339f94b6424088040114de8aeba150d3c0d551a92966d0e267bffcccf9783795
[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" "339f94b6424088040114de8aeba150d3c0d551a92966d0e267bffcccf9783795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "339f94b6424088040114de8aeba150d3c0d551a92966d0e267bffcccf9783795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "339f94b6424088040114de8aeba150d3c0d551a92966d0e267bffcccf9783795", kill_on_drop: false }`
[INFO] [stdout] 339f94b6424088040114de8aeba150d3c0d551a92966d0e267bffcccf9783795
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2f09d385b7f44213614188e213f4402c142e30f1623ee1b8ba6ac13f64ba4afc
[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" "2f09d385b7f44213614188e213f4402c142e30f1623ee1b8ba6ac13f64ba4afc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking rustc-serialize v0.3.22
[INFO] [stderr]     Checking byteorder v1.0.0
[INFO] [stderr]     Checking bitflags v0.4.0
[INFO] [stderr]     Checking libc v0.2.20 (https://github.com/rust-lang/libc#bce927b3)
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking nix v0.8.0 (https://github.com/Idolf/nix.git?branch=ptrace-stuff#65f0d512)
[INFO] [stderr]     Checking uuid v0.3.1
[INFO] [stderr]     Checking bincode v0.6.1
[INFO] [stderr]     Checking ipc-channel v0.6.0
[INFO] [stderr]     Checking syscall-challenge v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.90s
[INFO] running `Command { std: "docker" "inspect" "2f09d385b7f44213614188e213f4402c142e30f1623ee1b8ba6ac13f64ba4afc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2f09d385b7f44213614188e213f4402c142e30f1623ee1b8ba6ac13f64ba4afc", kill_on_drop: false }`
[INFO] [stdout] 2f09d385b7f44213614188e213f4402c142e30f1623ee1b8ba6ac13f64ba4afc