[INFO] fetching crate destack 0.0.0...
[INFO] testing destack-0.0.0 against 1.90.0 for beta-1.91-3
[INFO] extracting crate destack 0.0.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate destack 0.0.0
[INFO] finished tweaking crates.io crate destack 0.0.0
[INFO] tweaked toml for crates.io crate destack 0.0.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate destack 0.0.0 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "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" "+1.90.0" "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-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 94c4ff25e19ce10da9ca3ad2e0a2f346ff2a7f2b518c1ad82ae88bfad2d0ffd7
[INFO] running `Command { std: "docker" "start" "-a" "94c4ff25e19ce10da9ca3ad2e0a2f346ff2a7f2b518c1ad82ae88bfad2d0ffd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "94c4ff25e19ce10da9ca3ad2e0a2f346ff2a7f2b518c1ad82ae88bfad2d0ffd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94c4ff25e19ce10da9ca3ad2e0a2f346ff2a7f2b518c1ad82ae88bfad2d0ffd7", kill_on_drop: false }`
[INFO] [stdout] 94c4ff25e19ce10da9ca3ad2e0a2f346ff2a7f2b518c1ad82ae88bfad2d0ffd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 404df21bb31317c5586fa6059c49612271e8e31067932264264f96b29f9bff7a
[INFO] running `Command { std: "docker" "start" "-a" "404df21bb31317c5586fa6059c49612271e8e31067932264264f96b29f9bff7a", kill_on_drop: false }`
[INFO] [stderr]    Compiling destack v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.10s
[INFO] running `Command { std: "docker" "inspect" "404df21bb31317c5586fa6059c49612271e8e31067932264264f96b29f9bff7a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "404df21bb31317c5586fa6059c49612271e8e31067932264264f96b29f9bff7a", kill_on_drop: false }`
[INFO] [stdout] 404df21bb31317c5586fa6059c49612271e8e31067932264264f96b29f9bff7a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff5eb22587cf420f9677bb297f73b12d91b4ebf8ef51d94851fbc1ca70228f72
[INFO] running `Command { std: "docker" "start" "-a" "ff5eb22587cf420f9677bb297f73b12d91b4ebf8ef51d94851fbc1ca70228f72", kill_on_drop: false }`
[INFO] [stderr]    Compiling destack v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "ff5eb22587cf420f9677bb297f73b12d91b4ebf8ef51d94851fbc1ca70228f72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff5eb22587cf420f9677bb297f73b12d91b4ebf8ef51d94851fbc1ca70228f72", kill_on_drop: false }`
[INFO] [stdout] ff5eb22587cf420f9677bb297f73b12d91b4ebf8ef51d94851fbc1ca70228f72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 55d810031865432792a77ae0ee0c09b581fd472f9abc024fde3789520f12d851
[INFO] running `Command { std: "docker" "start" "-a" "55d810031865432792a77ae0ee0c09b581fd472f9abc024fde3789520f12d851", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/destack-f2cdb1fb44b766d6)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests destack
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "55d810031865432792a77ae0ee0c09b581fd472f9abc024fde3789520f12d851", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55d810031865432792a77ae0ee0c09b581fd472f9abc024fde3789520f12d851", kill_on_drop: false }`
[INFO] [stdout] 55d810031865432792a77ae0ee0c09b581fd472f9abc024fde3789520f12d851