[INFO] fetching crate mon-artist 0.1.3...
[INFO] checking mon-artist-0.1.3 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] extracting crate mon-artist 0.1.3 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate mon-artist 0.1.3 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mon-artist 0.1.3
[INFO] finished tweaking crates.io crate mon-artist 0.1.3
[INFO] tweaked toml for crates.io crate mon-artist 0.1.3 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 54 packages to latest compatible versions
[INFO] [stderr]       Adding aho-corasick v0.6.10 (available: v1.1.3)
[INFO] [stderr]       Adding ascii-canvas v1.0.0 (available: v3.0.0)
[INFO] [stderr]       Adding atty v0.1.2 (available: v0.2.14)
[INFO] [stderr]       Adding bit-set v0.4.0 (available: v0.8.0)
[INFO] [stderr]       Adding bit-vec v0.4.4 (available: v0.8.0)
[INFO] [stderr]       Adding bitflags v0.3.3 (available: v2.6.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (available: v1.0.0)
[INFO] [stderr]       Adding docopt v0.7.0 (available: v1.1.1)
[INFO] [stderr]       Adding ena v0.5.0 (available: v0.14.3)
[INFO] [stderr]       Adding env_logger v0.4.3 (available: v0.11.5)
[INFO] [stderr]       Adding filetime v0.1.15 (available: v0.2.25)
[INFO] [stderr]       Adding fixedbitset v0.1.9 (available: v0.5.7)
[INFO] [stderr]       Adding idna v0.1.5 (available: v1.0.2)
[INFO] [stderr]       Adding itertools v0.5.10 (available: v0.13.0)
[INFO] [stderr]       Adding lalrpop v0.13.1 (available: v0.21.0)
[INFO] [stderr]       Adding lalrpop-intern v0.13.1 (available: v0.15.1)
[INFO] [stderr]       Adding lalrpop-snap v0.13.1 (available: v0.16.0)
[INFO] [stderr]       Adding lalrpop-util v0.13.1 (available: v0.21.0)
[INFO] [stderr]       Adding lazy_static v0.2.11 (available: v1.5.0)
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.22)
[INFO] [stderr]       Adding ordermap v0.3.5 (available: v0.5.3)
[INFO] [stderr]       Adding percent-encoding v1.0.1 (available: v2.3.1)
[INFO] [stderr]       Adding petgraph v0.4.13 (available: v0.6.5)
[INFO] [stderr]       Adding redox_syscall v0.1.57 (available: v0.5.6)
[INFO] [stderr]       Adding regex v0.2.11 (available: v1.10.6)
[INFO] [stderr]       Adding regex-syntax v0.4.2 (available: v0.8.4)
[INFO] [stderr]       Adding regex-syntax v0.5.6 (available: v0.8.4)
[INFO] [stderr]       Adding same-file v0.1.3 (available: v1.0.6)
[INFO] [stderr]       Adding strsim v0.6.0 (available: v0.11.1)
[INFO] [stderr]       Adding tango v0.6.2 (available: v0.8.3)
[INFO] [stderr]       Adding term v0.4.6 (available: v1.0.0)
[INFO] [stderr]       Adding thread_local v0.3.6 (available: v1.1.8)
[INFO] [stderr]       Adding treexml v0.3.0 (available: v0.7.0)
[INFO] [stderr]       Adding ucd-util v0.1.10 (available: v0.2.1)
[INFO] [stderr]       Adding unicode-xid v0.0.4 (available: v0.2.6)
[INFO] [stderr]       Adding url v1.7.2 (available: v2.5.2)
[INFO] [stderr]       Adding walkdir v1.0.7 (available: v2.5.0)
[INFO] [stderr]       Adding winapi v0.2.8 (available: v0.3.9)
[INFO] [stderr]       Adding xml-rs v0.2.2 (available: v0.8.22)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ena v0.5.0
[INFO] [stderr]   Downloaded xml-rs v0.2.2
[INFO] [stderr]   Downloaded lalrpop-intern v0.13.1
[INFO] [stderr]   Downloaded lalrpop-util v0.13.1
[INFO] [stderr]   Downloaded atty v0.1.2
[INFO] [stderr]   Downloaded docopt v0.7.0
[INFO] [stderr]   Downloaded lalrpop v0.13.1
[INFO] [stderr]   Downloaded lalrpop-snap v0.13.1
[INFO] [stderr]   Downloaded tango v0.6.2
[INFO] [stderr]   Downloaded treexml v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cfc31f22d2a4dffcc6d46c868451a9c0103e21c6d6250d47740750c82a449824
[INFO] running `Command { std: "docker" "start" "-a" "cfc31f22d2a4dffcc6d46c868451a9c0103e21c6d6250d47740750c82a449824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cfc31f22d2a4dffcc6d46c868451a9c0103e21c6d6250d47740750c82a449824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfc31f22d2a4dffcc6d46c868451a9c0103e21c6d6250d47740750c82a449824", kill_on_drop: false }`
[INFO] [stdout] cfc31f22d2a4dffcc6d46c868451a9c0103e21c6d6250d47740750c82a449824
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08d5ee6daf3b6105faf24561930e5e854a5d8baadec0fc816e2f4d1ea11fabdf
[INFO] running `Command { std: "docker" "start" "-a" "08d5ee6daf3b6105faf24561930e5e854a5d8baadec0fc816e2f4d1ea11fabdf", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling ucd-util v0.1.10
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling utf8-ranges v1.0.5
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling strsim v0.6.0
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling tinyvec v1.8.0
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling ascii-canvas v1.0.0
[INFO] [stderr]    Compiling atty v0.1.2
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling ena v0.5.0
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling lalrpop-util v0.13.1
[INFO] [stderr]    Compiling lalrpop-intern v0.13.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.24
[INFO] [stderr]    Compiling unicode-bidi v0.3.15
[INFO] [stderr]    Compiling matches v0.1.10
[INFO] [stderr]    Compiling same-file v0.1.3
[INFO] [stderr]    Compiling tango v0.6.2
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling filetime v0.1.15
[INFO] [stderr]    Compiling walkdir v1.0.7
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]     Checking bitflags v0.3.3
[INFO] [stderr]     Checking xml-rs v0.2.2
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]     Checking treexml v0.3.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tango-0.6.2/src/lib.rs:259:57
[INFO] [stdout]     |
[INFO] [stdout] 259 |         for c in self.0.components().skip(1) { p.push(c.as_ref().to_str().expect("how else can I replace root?")); }
[INFO] [stdout]     |                                                         ^^^^^^   ------ type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: try using a fully qualified path to specify the expected types
[INFO] [stdout]     |
[INFO] [stdout] 259 |         for c in self.0.components().skip(1) { p.push(<Component<'_> as AsRef<T>>::as_ref(&c).to_str().expect("how else can I replace root?")); }
[INFO] [stdout]     |                                                       +++++++++++++++++++++++++++++++++++++ ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tango-0.6.2/src/lib.rs:273:57
[INFO] [stdout]     |
[INFO] [stdout] 273 |         for c in self.0.components().skip(1) { p.push(c.as_ref().to_str().expect("how else can I replace root?")); }
[INFO] [stdout]     |                                                         ^^^^^^   ------ type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout] help: try using a fully qualified path to specify the expected types
[INFO] [stdout]     |
[INFO] [stdout] 273 |         for c in self.0.components().skip(1) { p.push(<Component<'_> as AsRef<T>>::as_ref(&c).to_str().expect("how else can I replace root?")); }
[INFO] [stdout]     |                                                       +++++++++++++++++++++++++++++++++++++ ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling docopt v0.7.0
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tango` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "08d5ee6daf3b6105faf24561930e5e854a5d8baadec0fc816e2f4d1ea11fabdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08d5ee6daf3b6105faf24561930e5e854a5d8baadec0fc816e2f4d1ea11fabdf", kill_on_drop: false }`
[INFO] [stdout] 08d5ee6daf3b6105faf24561930e5e854a5d8baadec0fc816e2f4d1ea11fabdf