[INFO] cloning repository https://github.com/ristew/rssh
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ristew/rssh" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fristew%2Frssh", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fristew%2Frssh'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7ed2c6ee7e8e8e95185749bcd13ee92ac859879b
[INFO] testing ristew/rssh against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fristew%2Frssh" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ristew/rssh on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ristew/rssh
[INFO] finished tweaking git repo https://github.com/ristew/rssh
[INFO] tweaked toml for git repo https://github.com/ristew/rssh written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ristew/rssh already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41336dba63c2bff17bcc9df5364cab6f55bd01c0bc2a4062d456f13235c95c7d
[INFO] running `Command { std: "docker" "start" "-a" "41336dba63c2bff17bcc9df5364cab6f55bd01c0bc2a4062d456f13235c95c7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41336dba63c2bff17bcc9df5364cab6f55bd01c0bc2a4062d456f13235c95c7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41336dba63c2bff17bcc9df5364cab6f55bd01c0bc2a4062d456f13235c95c7d", kill_on_drop: false }`
[INFO] [stdout] 41336dba63c2bff17bcc9df5364cab6f55bd01c0bc2a4062d456f13235c95c7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 458ff9a17ed7d173791d4d12b70b89d44cb96a95c04aad99fb40e5d6d9b28e4e
[INFO] running `Command { std: "docker" "start" "-a" "458ff9a17ed7d173791d4d12b70b89d44cb96a95c04aad99fb40e5d6d9b28e4e", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v0.1.1
[INFO] [stderr]    Compiling libc v0.1.10
[INFO] [stderr]    Compiling nix v0.3.9
[INFO] [stdout] error[E0591]: can't transmute zero-sized type
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.3.9/src/sched.rs:168:20
[INFO] [stdout]     |
[INFO] [stdout] 168 |         ffi::clone(mem::transmute(callback), ptr as *mut c_void, flags, &mut cb)
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: source type: for<'r> extern "C" fn(*mut Box<(dyn FnMut() -> isize + 'r)>) -> i32 {callback}
[INFO] [stdout]     = note: target type: *const for<'r> extern "C" fn(*const Box<(dyn FnMut() -> isize + 'r)>) -> i32
[INFO] [stdout]     = help: cast with `as` to a pointer instead
[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 E0591`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "458ff9a17ed7d173791d4d12b70b89d44cb96a95c04aad99fb40e5d6d9b28e4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "458ff9a17ed7d173791d4d12b70b89d44cb96a95c04aad99fb40e5d6d9b28e4e", kill_on_drop: false }`
[INFO] [stdout] 458ff9a17ed7d173791d4d12b70b89d44cb96a95c04aad99fb40e5d6d9b28e4e