[INFO] cloning repository https://github.com/tibetsou/collatz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tibetsou/collatz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftibetsou%2Fcollatz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftibetsou%2Fcollatz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15cd702f9690f24224399f67468131511653f0b4
[INFO] building tibetsou/collatz against master#70591dc15db32941fe3595fdbf98e58d6975f95e for pr-127731
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftibetsou%2Fcollatz" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tibetsou/collatz on toolchain 70591dc15db32941fe3595fdbf98e58d6975f95e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tibetsou/collatz
[INFO] finished tweaking git repo https://github.com/tibetsou/collatz
[INFO] tweaked toml for git repo https://github.com/tibetsou/collatz written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tibetsou/collatz already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 19a1f54f179797fd31efc04ca713b45b988d3517d614d4f99d6bd212ba13a704
[INFO] running `Command { std: "docker" "start" "-a" "19a1f54f179797fd31efc04ca713b45b988d3517d614d4f99d6bd212ba13a704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "19a1f54f179797fd31efc04ca713b45b988d3517d614d4f99d6bd212ba13a704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19a1f54f179797fd31efc04ca713b45b988d3517d614d4f99d6bd212ba13a704", kill_on_drop: false }`
[INFO] [stdout] 19a1f54f179797fd31efc04ca713b45b988d3517d614d4f99d6bd212ba13a704
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+70591dc15db32941fe3595fdbf98e58d6975f95e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ba6f8421b36bfc5f343d0b2a25fb2216c0a40d3eb6bb985efff22d56402495c
[INFO] running `Command { std: "docker" "start" "-a" "3ba6f8421b36bfc5f343d0b2a25fb2216c0a40d3eb6bb985efff22d56402495c", kill_on_drop: false }`
[INFO] [stderr]    Compiling collatz v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `f` is never used
[INFO] [stdout]   --> src/main.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn f(n: u64) -> u64 {
[INFO] [stdout]    |    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: LC_ALL="C" PATH="/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/bin/self-contained:/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/bin/self-contained:/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/bin/self-contained:/opt/rustwide/cargo-home/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" VSLANG="1033" "cc" "-m64" "/tmp/rustcg9OLy4/symbols.o" "/opt/rustwide/target/debug/deps/collatz-ae90902938c2802e.collatz.f8fb85005d185d7b-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/collatz-ae90902938c2802e.alo8vy1hkd8pg14kfqgn9rubx.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-164d8fd564e4a211.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-783334590566e0fc.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-c61bd2663437c986.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-3c8f3a81644cce25.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-1244532a75e334d2.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-3edd22dc47a4513c.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-c12887f7a732d2f0.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-d5dba12b1f233f3e.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-e323419cd7924de6.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-008b8c4c7649b293.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-1e9aca0e00b982af.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-09eb8c2d25291926.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-85ca560db35b8e52.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-87a41ae6a2ba697f.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-72750b703a18185c.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a1a711aa3d9d444c.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-a912b32e3ca9ae43.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-1922b8ad2a4e54ab.rlib" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-e60eec2aca178aae.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-B/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-B/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-B/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-L" "/opt/rustwide/rustup-home/toolchains/70591dc15db32941fe3595fdbf98e58d6975f95e/lib/rustlib/x86_64-unknown-linux-gnu/lib/self-contained" "-o" "/opt/rustwide/target/debug/deps/collatz-ae90902938c2802e" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: collect2: fatal error: ld terminated with signal 7 [Bus error], core dumped
[INFO] [stdout]           compilation terminated.
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `collatz` (bin "collatz") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "3ba6f8421b36bfc5f343d0b2a25fb2216c0a40d3eb6bb985efff22d56402495c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ba6f8421b36bfc5f343d0b2a25fb2216c0a40d3eb6bb985efff22d56402495c", kill_on_drop: false }`
[INFO] [stdout] 3ba6f8421b36bfc5f343d0b2a25fb2216c0a40d3eb6bb985efff22d56402495c