[INFO] fetching crate stree_cmd 0.2.1...
[INFO] checking stree_cmd-0.2.1 against master#ffa2e7ae8fbf9badc035740db949b9dae271c29f for pr-78338
[INFO] extracting crate stree_cmd 0.2.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate stree_cmd 0.2.1 on toolchain ffa2e7ae8fbf9badc035740db949b9dae271c29f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa2e7ae8fbf9badc035740db949b9dae271c29f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stree_cmd 0.2.1
[INFO] removed path dependency suffix_tree from crates.io crate stree_cmd 0.2.1
[INFO] finished tweaking crates.io crate stree_cmd 0.2.1
[INFO] tweaked toml for crates.io crate stree_cmd 0.2.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa2e7ae8fbf9badc035740db949b9dae271c29f" "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" "+ffa2e7ae8fbf9badc035740db949b9dae271c29f" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa2e7ae8fbf9badc035740db949b9dae271c29f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 64a8cfb273fe55c5083651e9d90f28720576f543d04728b15f049f6a9bdae682
[INFO] running `Command { std: "docker" "start" "-a" "64a8cfb273fe55c5083651e9d90f28720576f543d04728b15f049f6a9bdae682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64a8cfb273fe55c5083651e9d90f28720576f543d04728b15f049f6a9bdae682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64a8cfb273fe55c5083651e9d90f28720576f543d04728b15f049f6a9bdae682", kill_on_drop: false }`
[INFO] [stdout] 64a8cfb273fe55c5083651e9d90f28720576f543d04728b15f049f6a9bdae682
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa2e7ae8fbf9badc035740db949b9dae271c29f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 080be33c4abc4f64c3e5d117843555241699435497c6a3e15b336f8cdbb8cf3d
[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" "080be33c4abc4f64c3e5d117843555241699435497c6a3e15b336f8cdbb8cf3d", kill_on_drop: false }`
[INFO] [stderr]     Checking suffix v0.4.1
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking suffix_tree v0.2.2
[INFO] [stderr]     Checking docopt v0.6.86
[INFO] [stderr]     Checking stree_cmd v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/main.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | macro_rules! cerr { ($tt:tt) => (return Err(Error::Other(format!($tt)))); }
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | / macro_rules! lg {
[INFO] [stdout] 16 | |     ($($arg:tt)*) => ({ writeln!(&mut io::stderr(), $($arg)*).unwrap(); });
[INFO] [stdout] 17 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.91s
[INFO] running `Command { std: "docker" "inspect" "080be33c4abc4f64c3e5d117843555241699435497c6a3e15b336f8cdbb8cf3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "080be33c4abc4f64c3e5d117843555241699435497c6a3e15b336f8cdbb8cf3d", kill_on_drop: false }`
[INFO] [stdout] 080be33c4abc4f64c3e5d117843555241699435497c6a3e15b336f8cdbb8cf3d