[INFO] fetching crate fscan 0.2.0...
[INFO] checking fscan-0.2.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate fscan 0.2.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate fscan 0.2.0
[INFO] finished tweaking crates.io crate fscan 0.2.0
[INFO] tweaked toml for crates.io crate fscan 0.2.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fscan 0.2.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fscan 0.2.0 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4122be563fce531c3b14ac84f4c185efa7df08402d2d8473612e2cd56d557fca
[INFO] running `Command { std: "docker" "start" "-a" "4122be563fce531c3b14ac84f4c185efa7df08402d2d8473612e2cd56d557fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4122be563fce531c3b14ac84f4c185efa7df08402d2d8473612e2cd56d557fca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4122be563fce531c3b14ac84f4c185efa7df08402d2d8473612e2cd56d557fca", kill_on_drop: false }`
[INFO] [stdout] 4122be563fce531c3b14ac84f4c185efa7df08402d2d8473612e2cd56d557fca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb3d6df1d4b02b33d144f3dda0e22ee61cd3752d4dce76d0f3a9133441baa434
[INFO] running `Command { std: "docker" "start" "-a" "eb3d6df1d4b02b33d144f3dda0e22ee61cd3752d4dce76d0f3a9133441baa434", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]     Checking unicode-width v0.1.10
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking tabwriter v1.2.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking fscan v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/fscan/tree.rs:33:26
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn children<'a>(&'a self) -> Box<dyn iter::Iterator<Item = &FSNode> + 'a> {
[INFO] [stdout]    |                          ^^                                        -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]    |                          |                                         |
[INFO] [stdout]    |                          this lifetime flows to the output         the lifetimes get resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn children<'a>(&'a self) -> Box<dyn iter::Iterator<Item = &'a FSNode> + 'a> {
[INFO] [stdout]    |                                                                     ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/fscan/tree.rs:33:26
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn children<'a>(&'a self) -> Box<dyn iter::Iterator<Item = &FSNode> + 'a> {
[INFO] [stdout]    |                          ^^                                        -------    -- the lifetimes get resolved as `'a`
[INFO] [stdout]    |                          |                                         |
[INFO] [stdout]    |                          this lifetime flows to the output         the lifetimes get resolved as `'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn children<'a>(&'a self) -> Box<dyn iter::Iterator<Item = &'a FSNode> + 'a> {
[INFO] [stdout]    |                                                                     ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.86s
[INFO] running `Command { std: "docker" "inspect" "eb3d6df1d4b02b33d144f3dda0e22ee61cd3752d4dce76d0f3a9133441baa434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb3d6df1d4b02b33d144f3dda0e22ee61cd3752d4dce76d0f3a9133441baa434", kill_on_drop: false }`
[INFO] [stdout] eb3d6df1d4b02b33d144f3dda0e22ee61cd3752d4dce76d0f3a9133441baa434