[INFO] cloning repository https://github.com/mmmpa/treeer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mmmpa/treeer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmmpa%2Ftreeer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmmpa%2Ftreeer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] df131f871c0e09b8d4baae8912c033d079809288
[INFO] checking mmmpa/treeer against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmmpa%2Ftreeer" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mmmpa/treeer on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1-tc2/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/mmmpa/treeer
[INFO] finished tweaking git repo https://github.com/mmmpa/treeer
[INFO] tweaked toml for git repo https://github.com/mmmpa/treeer written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mmmpa/treeer 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" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a374620b5bbdc28431d82510c1c754bfef4148f7f50567795b0e91fabfe8ed94
[INFO] running `Command { std: "docker" "start" "-a" "a374620b5bbdc28431d82510c1c754bfef4148f7f50567795b0e91fabfe8ed94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a374620b5bbdc28431d82510c1c754bfef4148f7f50567795b0e91fabfe8ed94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a374620b5bbdc28431d82510c1c754bfef4148f7f50567795b0e91fabfe8ed94", kill_on_drop: false }`
[INFO] [stdout] a374620b5bbdc28431d82510c1c754bfef4148f7f50567795b0e91fabfe8ed94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 055f6c13d32aa9e96ac771411a3c290c4fe79b0acce701abc501c5db761907ce
[INFO] running `Command { std: "docker" "start" "-a" "055f6c13d32aa9e96ac771411a3c290c4fe79b0acce701abc501c5db761907ce", kill_on_drop: false }`
[INFO] [stderr]     Checking modifier v0.1.0
[INFO] [stderr]     Checking json v0.12.1
[INFO] [stderr]     Checking treeer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> src/treeer/attr_helpers.rs:3:39
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn class<'a>(v: &'a [&'a str]) -> Class { Class(v) }
[INFO] [stdout]   |              --                       ^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |              |
[INFO] [stdout]   |              lifetime `'a` declared here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]  --> src/treeer/attr_helpers.rs:3:39
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn class<'a>(v: &'a [&'a str]) -> Class { Class(v) }
[INFO] [stdout]   |              --                       ^^^^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout]   |              |
[INFO] [stdout]   |              lifetime `'a` declared here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `errors` is never read
[INFO] [stdout]  --> src/treeer/errors.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TreeerErr {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 6 |     errors: Errors
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TreeerErr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/treeer/errors.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |     IoError(std::io::Error),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Errors` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 16 |     IoError(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/treeer/errors.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 |     FromUtf8Error(std::string::FromUtf8Error),
[INFO] [stdout]    |     ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Errors` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 17 |     FromUtf8Error(()),
[INFO] [stdout]    |                   ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_mut` is never used
[INFO] [stdout]   --> src/treeer/tag.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait Tag: Debug + 'static + StateAccessor + Sized {
[INFO] [stdout]    |           --- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn set_mut<M: Modifier<State>>(&mut self, m: M) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `std::string::String` to `std::string::String`
[INFO] [stdout]   --> src/treeer/element.rs:60:54
[INFO] [stdout]    |
[INFO] [stdout] 60 | impl TextNode { pub fn new(t: String) -> Self { Self(t.into()) } }
[INFO] [stdout]    |                                                      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `std::string::String` to `std::string::String`
[INFO] [stdout]   --> src/treeer/state.rs:65:26
[INFO] [stdout]    |
[INFO] [stdout] 65 |         src._attr.insert(key.into(), value.into());
[INFO] [stdout]    |                          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `std::string::String` to `std::string::String`
[INFO] [stdout]   --> src/treeer/state.rs:65:38
[INFO] [stdout]    |
[INFO] [stdout] 65 |         src._attr.insert(key.into(), value.into());
[INFO] [stdout]    |                                      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `std::string::String` to `std::string::String`
[INFO] [stdout]   --> src/treeer/state.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |         src._attr.insert(key.into(), value.into());
[INFO] [stdout]    |                                      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `treeer` (lib) due to 4 previous errors; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `errors` is never read
[INFO] [stdout]  --> src/treeer/errors.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct TreeerErr {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] 6 |     errors: Errors
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TreeerErr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/treeer/errors.rs:16:13
[INFO] [stdout]    |
[INFO] [stdout] 16 |     IoError(std::io::Error),
[INFO] [stdout]    |     ------- ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Errors` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 16 |     IoError(()),
[INFO] [stdout]    |             ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/treeer/errors.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 |     FromUtf8Error(std::string::FromUtf8Error),
[INFO] [stdout]    |     ------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Errors` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 17 |     FromUtf8Error(()),
[INFO] [stdout]    |                   ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `set_mut` is never used
[INFO] [stdout]   --> src/treeer/tag.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub trait Tag: Debug + 'static + StateAccessor + Sized {
[INFO] [stdout]    |           --- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 16 |     fn set_mut<M: Modifier<State>>(&mut self, m: M) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `std::string::String` to `std::string::String`
[INFO] [stdout]   --> src/treeer/element.rs:60:54
[INFO] [stdout]    |
[INFO] [stdout] 60 | impl TextNode { pub fn new(t: String) -> Self { Self(t.into()) } }
[INFO] [stdout]    |                                                      ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `std::string::String` to `std::string::String`
[INFO] [stdout]   --> src/treeer/state.rs:65:26
[INFO] [stdout]    |
[INFO] [stdout] 65 |         src._attr.insert(key.into(), value.into());
[INFO] [stdout]    |                          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `std::string::String` to `std::string::String`
[INFO] [stdout]   --> src/treeer/state.rs:65:38
[INFO] [stdout]    |
[INFO] [stdout] 65 |         src._attr.insert(key.into(), value.into());
[INFO] [stdout]    |                                      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `std::string::String` to `std::string::String`
[INFO] [stdout]   --> src/treeer/state.rs:72:38
[INFO] [stdout]    |
[INFO] [stdout] 72 |         src._attr.insert(key.into(), value.into());
[INFO] [stdout]    |                                      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `treeer` (lib test) due to 4 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "055f6c13d32aa9e96ac771411a3c290c4fe79b0acce701abc501c5db761907ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "055f6c13d32aa9e96ac771411a3c290c4fe79b0acce701abc501c5db761907ce", kill_on_drop: false }`
[INFO] [stdout] 055f6c13d32aa9e96ac771411a3c290c4fe79b0acce701abc501c5db761907ce