[INFO] cloning repository https://github.com/faultypointer/ThereCanNeverBeTooManyLinkedList
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/faultypointer/ThereCanNeverBeTooManyLinkedList" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaultypointer%2FThereCanNeverBeTooManyLinkedList", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaultypointer%2FThereCanNeverBeTooManyLinkedList'...
[INFO] [stderr] /workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaultypointer%2FThereCanNeverBeTooManyLinkedList: No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/faultypointer/ThereCanNeverBeTooManyLinkedList
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/faultypointer/ThereCanNeverBeTooManyLinkedList" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaultypointer%2FThereCanNeverBeTooManyLinkedList", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaultypointer%2FThereCanNeverBeTooManyLinkedList'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da22822b70a61e258ef33795110c44d7d19af53b
[INFO] testing faultypointer/ThereCanNeverBeTooManyLinkedList against master#414482f6a0d4e7290f614300581a0b55442552a3 for pr-140985
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffaultypointer%2FThereCanNeverBeTooManyLinkedList" "/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/faultypointer/ThereCanNeverBeTooManyLinkedList on toolchain 414482f6a0d4e7290f614300581a0b55442552a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/faultypointer/ThereCanNeverBeTooManyLinkedList
[INFO] finished tweaking git repo https://github.com/faultypointer/ThereCanNeverBeTooManyLinkedList
[INFO] tweaked toml for git repo https://github.com/faultypointer/ThereCanNeverBeTooManyLinkedList written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/faultypointer/ThereCanNeverBeTooManyLinkedList 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" "+414482f6a0d4e7290f614300581a0b55442552a3" "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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 194d834afd258360d766de6b997646716282d2946aceadf60d0a66b19efdca5f
[INFO] running `Command { std: "docker" "start" "-a" "194d834afd258360d766de6b997646716282d2946aceadf60d0a66b19efdca5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "194d834afd258360d766de6b997646716282d2946aceadf60d0a66b19efdca5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "194d834afd258360d766de6b997646716282d2946aceadf60d0a66b19efdca5f", kill_on_drop: false }`
[INFO] [stdout] 194d834afd258360d766de6b997646716282d2946aceadf60d0a66b19efdca5f
[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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+414482f6a0d4e7290f614300581a0b55442552a3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b6de1d9d96bcdfb56291fca41ff4124afe402d0d64ce8714adde810e98e5e551
[INFO] running `Command { std: "docker" "start" "-a" "b6de1d9d96bcdfb56291fca41ff4124afe402d0d64ce8714adde810e98e5e551", kill_on_drop: false }`
[INFO] [stderr]    Compiling twomanylinkedlist v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `iter_mut_invariant` is never used
[INFO] [stdout]    --> src/sixth.rs:709:4
[INFO] [stdout]     |
[INFO] [stdout] 709 | fn iter_mut_invariant() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: couldn't create a temp dir: No space left on device (os error 28) at path "/tmp/rustclMAjpS"
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `twomanylinkedlist` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b6de1d9d96bcdfb56291fca41ff4124afe402d0d64ce8714adde810e98e5e551", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6de1d9d96bcdfb56291fca41ff4124afe402d0d64ce8714adde810e98e5e551", kill_on_drop: false }`
[INFO] [stdout] b6de1d9d96bcdfb56291fca41ff4124afe402d0d64ce8714adde810e98e5e551