[INFO] fetching crate muncher 0.7.0...
[INFO] testing muncher-0.7.0 against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1
[INFO] extracting crate muncher 0.7.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate muncher 0.7.0
[INFO] finished tweaking crates.io crate muncher 0.7.0
[INFO] tweaked toml for crates.io crate muncher 0.7.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate muncher 0.7.0 on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "generate-lockfile" "--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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 406516aa262ed568335453c514d48dde7a92c40dca6b61baa62b7c60e3c84617
[INFO] running `Command { std: "docker" "start" "-a" "406516aa262ed568335453c514d48dde7a92c40dca6b61baa62b7c60e3c84617", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "406516aa262ed568335453c514d48dde7a92c40dca6b61baa62b7c60e3c84617", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "406516aa262ed568335453c514d48dde7a92c40dca6b61baa62b7c60e3c84617", kill_on_drop: false }`
[INFO] [stdout] 406516aa262ed568335453c514d48dde7a92c40dca6b61baa62b7c60e3c84617
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:98afbf2d16093dec2546ff8915fddc74e65664aa03fc460b3712b1c2c54a33e4" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "build" "--frozen" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] a2c38d49082808822b3792add66deffb9cc7ad79172ca88127ec7cf5601c1252
[INFO] running `Command { std: "docker" "start" "-a" "a2c38d49082808822b3792add66deffb9cc7ad79172ca88127ec7cf5601c1252", kill_on_drop: false }`
[INFO] [stderr]    Compiling muncher v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `input` and `pos` are never read
[INFO] [stdout]   --> src/muncher.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Stack<'a> {
[INFO] [stdout]    |            ----- fields in this struct
[INFO] [stdout] 16 |     input: &'a str,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 17 |     stack: Vec<char>,
[INFO] [stdout] 18 |     pos: (usize, usize),
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stack` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `muncher` (lib); 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to parse process output: `/opt/rustwide/rustup-home/toolchains/bd7d74411512a3dd3b35d2f699c51dd2557c7e7e/bin/rustc --crate-name muncher --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=8e85c703786f54f0 -C extra-filename=-497ff94e9f05decc --out-dir /opt/rustwide/target/debug/build/muncher/497ff94e9f05decc/deps -L dependency=/opt/rustwide/target/debug/build/muncher/497ff94e9f05decc/deps --cap-lints=forbid` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "a2c38d49082808822b3792add66deffb9cc7ad79172ca88127ec7cf5601c1252", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2c38d49082808822b3792add66deffb9cc7ad79172ca88127ec7cf5601c1252", kill_on_drop: false }`
[INFO] [stdout] a2c38d49082808822b3792add66deffb9cc7ad79172ca88127ec7cf5601c1252