[INFO] cloning repository https://github.com/clundin25/zero-copy-panic-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/clundin25/zero-copy-panic-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclundin25%2Fzero-copy-panic-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclundin25%2Fzero-copy-panic-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] beaaa278400379644f82c46c096eb7de37239928
[INFO] testing clundin25/zero-copy-panic-example against master#b03b3a7ec92682be2917540b679478d41c95a30c for pr-137122-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fclundin25%2Fzero-copy-panic-example" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/clundin25/zero-copy-panic-example
[INFO] finished tweaking git repo https://github.com/clundin25/zero-copy-panic-example
[INFO] tweaked toml for git repo https://github.com/clundin25/zero-copy-panic-example written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/clundin25/zero-copy-panic-example on toolchain b03b3a7ec92682be2917540b679478d41c95a30c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/clundin25/zero-copy-panic-example 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" "+b03b3a7ec92682be2917540b679478d41c95a30c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zerocopy-derive v0.8.7
[INFO] [stderr]   Downloaded zerocopy v0.8.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec69e29865042443ef5aad6b38edadb0e793d42036983c430b702050a96a04fc
[INFO] running `Command { std: "docker" "start" "-a" "ec69e29865042443ef5aad6b38edadb0e793d42036983c430b702050a96a04fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec69e29865042443ef5aad6b38edadb0e793d42036983c430b702050a96a04fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec69e29865042443ef5aad6b38edadb0e793d42036983c430b702050a96a04fc", kill_on_drop: false }`
[INFO] [stdout] ec69e29865042443ef5aad6b38edadb0e793d42036983c430b702050a96a04fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3c6d0fb5962578258654b9611d83d667e9679a537406950338353d919cc53a5
[INFO] running `Command { std: "docker" "start" "-a" "c3c6d0fb5962578258654b9611d83d667e9679a537406950338353d919cc53a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling zerocopy v0.8.7
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]    Compiling zerocopy-derive v0.8.7
[INFO] [stderr]    Compiling playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `word_buf`
[INFO] [stdout]  --> src/main.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 |     let (word_buf, _suffix) = <[u32]>::ref_from_prefix_with_elems(&q, count).unwrap();
[INFO] [stdout]   |          ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_word_buf`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `writeable_word_buf`
[INFO] [stdout]   --> src/main.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (mut writeable_word_buf, _suffix) = <[u32]>::mut_from_prefix_with_elems(&mut p, p_count).unwrap();
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_writeable_word_buf`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let (mut writeable_word_buf, _suffix) = <[u32]>::mut_from_prefix_with_elems(&mut p, p_count).unwrap();
[INFO] [stdout]    |          ----^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.04s
[INFO] running `Command { std: "docker" "inspect" "c3c6d0fb5962578258654b9611d83d667e9679a537406950338353d919cc53a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3c6d0fb5962578258654b9611d83d667e9679a537406950338353d919cc53a5", kill_on_drop: false }`
[INFO] [stdout] c3c6d0fb5962578258654b9611d83d667e9679a537406950338353d919cc53a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+b03b3a7ec92682be2917540b679478d41c95a30c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cecda6a998e957053941ed2df7ccccea86aa0371f1b349be56e3f53a8a07db01
[INFO] running `Command { std: "docker" "start" "-a" "cecda6a998e957053941ed2df7ccccea86aa0371f1b349be56e3f53a8a07db01", kill_on_drop: false }`
[INFO] [stderr] Error response from daemon: mkdir /var/lib/docker/overlay2/e7fa01224c2fe8bb017fc5b7b9307f1cb5e3d5a76de95a1cfe0de80bd93e9e29/merged: no space left on device
[INFO] running `Command { std: "docker" "inspect" "cecda6a998e957053941ed2df7ccccea86aa0371f1b349be56e3f53a8a07db01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cecda6a998e957053941ed2df7ccccea86aa0371f1b349be56e3f53a8a07db01", kill_on_drop: false }`
[INFO] [stdout] cecda6a998e957053941ed2df7ccccea86aa0371f1b349be56e3f53a8a07db01