[INFO] fetching crate skill-tree 3.0.0...
[INFO] testing skill-tree-3.0.0 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate skill-tree 3.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate skill-tree 3.0.0 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate skill-tree 3.0.0
[INFO] finished tweaking crates.io crate skill-tree 3.0.0
[INFO] tweaked toml for crates.io crate skill-tree 3.0.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate skill-tree 3.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prettydiff v0.4.0
[INFO] [stderr]   Downloaded htmlescape v0.3.1
[INFO] [stderr]   Downloaded syn v0.15.36
[INFO] [stderr]   Downloaded serde_derive v1.0.92
[INFO] [stderr]   Downloaded toml v0.5.1
[INFO] [stderr]   Downloaded fehler-macros v1.0.0-alpha.2
[INFO] [stderr]   Downloaded fehler v1.0.0-alpha.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 332a62f75770bddfb99f8f391cd8ae6cb4dccfed2936ed68708543f379eab5da
[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" "332a62f75770bddfb99f8f391cd8ae6cb4dccfed2936ed68708543f379eab5da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "332a62f75770bddfb99f8f391cd8ae6cb4dccfed2936ed68708543f379eab5da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "332a62f75770bddfb99f8f391cd8ae6cb4dccfed2936ed68708543f379eab5da", kill_on_drop: false }`
[INFO] [stdout] 332a62f75770bddfb99f8f391cd8ae6cb4dccfed2936ed68708543f379eab5da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1960ff8f661dbd830b99128543cafb1eb7e2db9cf068fb71ac329a7d87ae4060
[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" "1960ff8f661dbd830b99128543cafb1eb7e2db9cf068fb71ac329a7d87ae4060", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]    Compiling htmlescape v0.3.1
[INFO] [stderr]    Compiling svg v0.5.12
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling serde_derive v1.0.92
[INFO] [stderr]    Compiling toml v0.5.1
[INFO] [stderr]    Compiling syn-mid v0.5.0
[INFO] [stderr]    Compiling fehler-macros v1.0.0-alpha.2
[INFO] [stderr]    Compiling proc-macro-error v0.4.9
[INFO] [stderr]    Compiling proc-macro-error-attr v0.4.9
[INFO] [stderr]    Compiling fehler v1.0.0-alpha.2
[INFO] [stderr]    Compiling structopt-derive v0.4.4
[INFO] [stderr]    Compiling structopt v0.3.11
[INFO] [stderr]    Compiling skill-tree v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `fontcolor`
[INFO] [stdout]    --> src/graphviz.rs:135:22
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let (_emoji, fontcolor, mut start_tag, mut end_tag) = match item_status {
[INFO] [stdout]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fontcolor`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 07s
[INFO] running `Command { std: "docker" "inspect" "1960ff8f661dbd830b99128543cafb1eb7e2db9cf068fb71ac329a7d87ae4060", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1960ff8f661dbd830b99128543cafb1eb7e2db9cf068fb71ac329a7d87ae4060", kill_on_drop: false }`
[INFO] [stdout] 1960ff8f661dbd830b99128543cafb1eb7e2db9cf068fb71ac329a7d87ae4060
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 207e2d72a1cf3fa5541ba2d8523fba0a2c390a1d9c0a778c04ecfb2d67eac536
[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" "207e2d72a1cf3fa5541ba2d8523fba0a2c390a1d9c0a778c04ecfb2d67eac536", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling encode_unicode v0.3.6
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stdout] warning: unused variable: `fontcolor`
[INFO] [stdout]    --> src/graphviz.rs:135:22
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let (_emoji, fontcolor, mut start_tag, mut end_tag) = match item_status {
[INFO] [stdout]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fontcolor`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling regex-automata v0.1.9
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling bstr v0.2.15
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling csv v1.1.6
[INFO] [stderr]    Compiling prettytable-rs v0.8.0
[INFO] [stderr]    Compiling prettydiff v0.4.0
[INFO] [stderr]    Compiling skill-tree v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `fontcolor`
[INFO] [stdout]    --> src/graphviz.rs:135:22
[INFO] [stdout]     |
[INFO] [stdout] 135 |         let (_emoji, fontcolor, mut start_tag, mut end_tag) = match item_status {
[INFO] [stdout]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fontcolor`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 25.42s
[INFO] running `Command { std: "docker" "inspect" "207e2d72a1cf3fa5541ba2d8523fba0a2c390a1d9c0a778c04ecfb2d67eac536", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "207e2d72a1cf3fa5541ba2d8523fba0a2c390a1d9c0a778c04ecfb2d67eac536", kill_on_drop: false }`
[INFO] [stdout] 207e2d72a1cf3fa5541ba2d8523fba0a2c390a1d9c0a778c04ecfb2d67eac536
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 787bef67a9cee22973b5fc2fc0bc54b4368b85daa8c9e56da4198b5d4e055913
[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" "787bef67a9cee22973b5fc2fc0bc54b4368b85daa8c9e56da4198b5d4e055913", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `fontcolor`
[INFO] [stdout] running 2 tests
[INFO] [stderr]    --> src/graphviz.rs:135:22
[INFO] [stderr]     |
[INFO] [stderr] 135 |         let (_emoji, fontcolor, mut start_tag, mut end_tag) = match item_status {
[INFO] [stderr]     |                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_fontcolor`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `skill-tree` (lib) generated 1 warning
[INFO] [stderr] warning: `skill-tree` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/skill_tree-5f6736521b674cd1)
[INFO] [stdout] test test::avd_snippet ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/skill_tree-c3d099fc05598324)
[INFO] [stdout] test test::invalid_requires - should panic ... ok
[INFO] [stderr]    Doc-tests skill-tree
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[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] [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" "787bef67a9cee22973b5fc2fc0bc54b4368b85daa8c9e56da4198b5d4e055913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "787bef67a9cee22973b5fc2fc0bc54b4368b85daa8c9e56da4198b5d4e055913", kill_on_drop: false }`
[INFO] [stdout] 787bef67a9cee22973b5fc2fc0bc54b4368b85daa8c9e56da4198b5d4e055913