[INFO] fetching crate itree 0.3.1...
[INFO] checking itree-0.3.1 against master#31ee872db5aae4750e3da1ca4ed1523c4356947f for pr-78461
[INFO] extracting crate itree 0.3.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate itree 0.3.1 on toolchain 31ee872db5aae4750e3da1ca4ed1523c4356947f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate itree 0.3.1
[INFO] finished tweaking crates.io crate itree 0.3.1
[INFO] tweaked toml for crates.io crate itree 0.3.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded indextree v1.3.0
[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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 64d21f35cc77133158df98c587e535f81e5ebaf8ccc23e8d0ab25e169def1dd6
[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" "64d21f35cc77133158df98c587e535f81e5ebaf8ccc23e8d0ab25e169def1dd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64d21f35cc77133158df98c587e535f81e5ebaf8ccc23e8d0ab25e169def1dd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64d21f35cc77133158df98c587e535f81e5ebaf8ccc23e8d0ab25e169def1dd6", kill_on_drop: false }`
[INFO] [stdout] 64d21f35cc77133158df98c587e535f81e5ebaf8ccc23e8d0ab25e169def1dd6
[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" "+31ee872db5aae4750e3da1ca4ed1523c4356947f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57d8b06cfcc2b32b725b3f706bd10a7ef717c5ccf8358888ae3a5291b81eb539
[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" "57d8b06cfcc2b32b725b3f706bd10a7ef717c5ccf8358888ae3a5291b81eb539", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking indextree v1.3.0
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking globset v0.4.6
[INFO] [stderr]     Checking ignore v0.4.16
[INFO] [stderr]     Checking itree v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/options.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fg_color: Box<Color>,
[INFO] [stdout]   |                       ^^^^^ help: use `dyn`: `dyn Color`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/options.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub bg_color: Box<Color>,
[INFO] [stdout]   |                       ^^^^^ help: use `dyn`: `dyn Color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options.rs:26:43
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn fg_color(&mut self, color: Box<Color>) -> &mut Self {
[INFO] [stdout]    |                                           ^^^^^ help: use `dyn`: `dyn Color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options.rs:31:43
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn bg_color(&mut self, color: Box<Color>) -> &mut Self {
[INFO] [stdout]    |                                           ^^^^^ help: use `dyn`: `dyn Color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/options.rs:8:23
[INFO] [stdout]   |
[INFO] [stdout] 8 |     pub fg_color: Box<Color>,
[INFO] [stdout]   |                       ^^^^^ help: use `dyn`: `dyn Color`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/options.rs:9:23
[INFO] [stdout]   |
[INFO] [stdout] 9 |     pub bg_color: Box<Color>,
[INFO] [stdout]   |                       ^^^^^ help: use `dyn`: `dyn Color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options.rs:26:43
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn fg_color(&mut self, color: Box<Color>) -> &mut Self {
[INFO] [stdout]    |                                           ^^^^^ help: use `dyn`: `dyn Color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options.rs:31:43
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn bg_color(&mut self, color: Box<Color>) -> &mut Self {
[INFO] [stdout]    |                                           ^^^^^ help: use `dyn`: `dyn Color`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/args.rs:109:37
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn string_to_color(cs: &str) -> Box<color::Color> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn color::Color`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/args.rs:109:37
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn string_to_color(cs: &str) -> Box<color::Color> {
[INFO] [stdout]     |                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn color::Color`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.39s
[INFO] running `Command { std: "docker" "inspect" "57d8b06cfcc2b32b725b3f706bd10a7ef717c5ccf8358888ae3a5291b81eb539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57d8b06cfcc2b32b725b3f706bd10a7ef717c5ccf8358888ae3a5291b81eb539", kill_on_drop: false }`
[INFO] [stdout] 57d8b06cfcc2b32b725b3f706bd10a7ef717c5ccf8358888ae3a5291b81eb539