[INFO] fetching crate defrag-dirs 0.1.1...
[INFO] checking defrag-dirs-0.1.1 against beta for pr-78714
[INFO] extracting crate defrag-dirs 0.1.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate defrag-dirs 0.1.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate defrag-dirs 0.1.1
[INFO] finished tweaking crates.io crate defrag-dirs 0.1.1
[INFO] tweaked toml for crates.io crate defrag-dirs 0.1.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ccad4cf72a14c947a861cc936ac10ef1a1e731f3b080677d4cd28ca26ca29b4e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ccad4cf72a14c947a861cc936ac10ef1a1e731f3b080677d4cd28ca26ca29b4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccad4cf72a14c947a861cc936ac10ef1a1e731f3b080677d4cd28ca26ca29b4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccad4cf72a14c947a861cc936ac10ef1a1e731f3b080677d4cd28ca26ca29b4e", kill_on_drop: false }`
[INFO] [stdout] ccad4cf72a14c947a861cc936ac10ef1a1e731f3b080677d4cd28ca26ca29b4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ee0e25f6332a3b3dd59c26c6e613acf1f37ed66ac60f0572e004da550b542dc
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1ee0e25f6332a3b3dd59c26c6e613acf1f37ed66ac60f0572e004da550b542dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]     Checking uuid v0.3.1
[INFO] [stderr]     Checking minilzo-sys v0.1.0
[INFO] [stderr]     Checking nix v0.8.1
[INFO] [stderr]     Checking minilzo v0.1.2
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling derive-error v0.0.3
[INFO] [stderr]     Checking btrfs2 v1.2.2
[INFO] [stderr]     Checking defrag-dirs v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `alloc_system`
[INFO] [stdout]   --> src/main.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate alloc_system;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `defrag-dirs`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0463]: can't find crate for `alloc_system`
[INFO] [stdout]   --> src/main.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | extern crate alloc_system;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1ee0e25f6332a3b3dd59c26c6e613acf1f37ed66ac60f0572e004da550b542dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ee0e25f6332a3b3dd59c26c6e613acf1f37ed66ac60f0572e004da550b542dc", kill_on_drop: false }`
[INFO] [stdout] 1ee0e25f6332a3b3dd59c26c6e613acf1f37ed66ac60f0572e004da550b542dc