[INFO] fetching crate ufotofu 0.6.2...
[INFO] testing ufotofu-0.6.2 against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940
[INFO] extracting crate ufotofu 0.6.2 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate ufotofu 0.6.2 on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ufotofu 0.6.2
[INFO] finished tweaking crates.io crate ufotofu 0.6.2
[INFO] tweaked toml for crates.io crate ufotofu 0.6.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate ufotofu 0.6.2 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" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 242ce939f47cc4d72aafda27ae3577c317b1d01dc2954a8c1407297b4797f96f
[INFO] running `Command { std: "docker" "start" "-a" "242ce939f47cc4d72aafda27ae3577c317b1d01dc2954a8c1407297b4797f96f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "242ce939f47cc4d72aafda27ae3577c317b1d01dc2954a8c1407297b4797f96f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "242ce939f47cc4d72aafda27ae3577c317b1d01dc2954a8c1407297b4797f96f", kill_on_drop: false }`
[INFO] [stdout] 242ce939f47cc4d72aafda27ae3577c317b1d01dc2954a8c1407297b4797f96f
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe4cfdae90fa125b8da69dd2b8ccb9c74834d2e738e5e5ccfb97749af2acf1ee
[INFO] running `Command { std: "docker" "start" "-a" "fe4cfdae90fa125b8da69dd2b8ccb9c74834d2e738e5e5ccfb97749af2acf1ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling ufotofu v0.6.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition: `invarianted_impl_as_mut`
[INFO] [stdout]   --> src/common_macros.rs:34:14
[INFO] [stdout]    |
[INFO] [stdout] 34 | macro_rules! invarianted_impl_as_mut {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `make_space_even_if_not_needed` and `remaining_slots` are never used
[INFO] [stdout]    --> src/consumer/into_vec.rs:113:19
[INFO] [stdout]     |
[INFO] [stdout] 112 | impl<T: Default> IntoVec_<T> {
[INFO] [stdout]     | ---------------------------- methods in this implementation
[INFO] [stdout] 113 |     pub(crate) fn make_space_even_if_not_needed(&mut self) {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     pub(crate) fn remaining_slots(&self) -> usize {
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `make_space_even_if_not_needed` and `remaining_slots` are never used
[INFO] [stdout]    --> src/consumer/into_vec.rs:157:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | impl<T: Default> IntoVec<T> {
[INFO] [stdout]     | --------------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 157 |     fn make_space_even_if_not_needed(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 161 |     fn remaining_slots(&self) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "fe4cfdae90fa125b8da69dd2b8ccb9c74834d2e738e5e5ccfb97749af2acf1ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe4cfdae90fa125b8da69dd2b8ccb9c74834d2e738e5e5ccfb97749af2acf1ee", kill_on_drop: false }`
[INFO] [stdout] fe4cfdae90fa125b8da69dd2b8ccb9c74834d2e738e5e5ccfb97749af2acf1ee
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47d4a2d5568b9726542baa9f40fd2593c3694cbf300cf1e113477c0b3cb5d27b
[INFO] running `Command { std: "docker" "start" "-a" "47d4a2d5568b9726542baa9f40fd2593c3694cbf300cf1e113477c0b3cb5d27b", kill_on_drop: false }`
[INFO] [stderr] error: failed to create directory `/opt/rustwide/target/debug/.fingerprint/ufotofu-818b442140bdbfa4`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No space left on device (os error 28)
[INFO] running `Command { std: "docker" "inspect" "47d4a2d5568b9726542baa9f40fd2593c3694cbf300cf1e113477c0b3cb5d27b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47d4a2d5568b9726542baa9f40fd2593c3694cbf300cf1e113477c0b3cb5d27b", kill_on_drop: false }`
[INFO] [stdout] 47d4a2d5568b9726542baa9f40fd2593c3694cbf300cf1e113477c0b3cb5d27b