[INFO] fetching crate esyn 0.9.1...
[INFO] checking esyn-0.9.1 against master#38352b01ae4af9300be03b805d6db68c45e51068 for pr-129864
[INFO] extracting crate esyn 0.9.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate esyn 0.9.1 on toolchain 38352b01ae4af9300be03b805d6db68c45e51068
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate esyn 0.9.1
[INFO] finished tweaking crates.io crate esyn 0.9.1
[INFO] tweaked toml for crates.io crate esyn 0.9.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate esyn 0.9.1 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" "+38352b01ae4af9300be03b805d6db68c45e51068" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thiserror v1.0.58
[INFO] [stderr]   Downloaded quote v1.0.35
[INFO] [stderr]   Downloaded unicode-ident v1.0.12
[INFO] [stderr]   Downloaded esyn-derive v0.9.1
[INFO] [stderr]   Downloaded thiserror-impl v1.0.58
[INFO] [stderr]   Downloaded proc-macro2 v1.0.79
[INFO] [stderr]   Downloaded prettyplease v0.2.17
[INFO] [stderr]   Downloaded syn v2.0.58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+38352b01ae4af9300be03b805d6db68c45e51068" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ae5ce389630d0ea83a8e272df7dcb60462c421f70b5f113eb80a400c5496199
[INFO] running `Command { std: "docker" "start" "-a" "7ae5ce389630d0ea83a8e272df7dcb60462c421f70b5f113eb80a400c5496199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ae5ce389630d0ea83a8e272df7dcb60462c421f70b5f113eb80a400c5496199", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ae5ce389630d0ea83a8e272df7dcb60462c421f70b5f113eb80a400c5496199", kill_on_drop: false }`
[INFO] [stdout] 7ae5ce389630d0ea83a8e272df7dcb60462c421f70b5f113eb80a400c5496199
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+38352b01ae4af9300be03b805d6db68c45e51068" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16bcf9fe72796cdabcc71a6b372362d3383b2227a648a5c54a593175c7be91ed
[INFO] running `Command { std: "docker" "start" "-a" "16bcf9fe72796cdabcc71a6b372362d3383b2227a648a5c54a593175c7be91ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling thiserror v1.0.58
[INFO] [stderr]    Compiling prettyplease v0.2.17
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking syn v2.0.58
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling esyn-derive v0.9.1
[INFO] [stderr]     Checking esyn v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/parser.rs:152:56
[INFO] [stdout]     |
[INFO] [stdout] 151 | impl<'ast> Esyn<'ast> {
[INFO] [stdout]     |      ---- lifetime `'ast` declared here
[INFO] [stdout] 152 |     fn _get_fn(&'ast self, fn_name: &str) -> Res<&'ast FnBlock> {
[INFO] [stdout]     |                                                        ^^^^^^^ this elided lifetime gets resolved as `'ast`
[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/parser.rs:152:56
[INFO] [stdout]     |
[INFO] [stdout] 151 | impl<'ast> Esyn<'ast> {
[INFO] [stdout]     |      ---- lifetime `'ast` declared here
[INFO] [stdout] 152 |     fn _get_fn(&'ast self, fn_name: &str) -> Res<&'ast FnBlock> {
[INFO] [stdout]     |                                                        ^^^^^^^ this elided lifetime gets resolved as `'ast`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sd`
[INFO] [stdout]   --> src/ext/duration.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let sd = SynDur::from_str(&tmp);
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_sd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `num` and `suffix` are never read
[INFO] [stdout]   --> src/ext/duration.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct SynDur {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 38 |     num: u128,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 39 |     suffix: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]   --> src/ext/duration.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl SynDur {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     fn to_string(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `FnVisit` is never used
[INFO] [stdout]   --> src/visit.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub type FnVisit<'other, 'ast, Input, Output> = Box<dyn FnMut(Input) -> Option<Output> + 'other>;
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WrapExprBlock` is never constructed
[INFO] [stdout]   --> src/visit.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct WrapExprBlock<'ast> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `sd`
[INFO] [stdout]   --> src/ext/duration.rs:11:13
[INFO] [stdout]    |
[INFO] [stdout] 11 |         let sd = SynDur::from_str(&tmp);
[INFO] [stdout]    |             ^^ help: if this is intentional, prefix it with an underscore: `_sd`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `num` and `suffix` are never read
[INFO] [stdout]   --> src/ext/duration.rs:38:5
[INFO] [stdout]    |
[INFO] [stdout] 37 | struct SynDur {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 38 |     num: u128,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 39 |     suffix: String,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_string` is never used
[INFO] [stdout]   --> src/ext/duration.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl SynDur {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     fn to_string(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `FnVisit` is never used
[INFO] [stdout]   --> src/visit.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub type FnVisit<'other, 'ast, Input, Output> = Box<dyn FnMut(Input) -> Option<Output> + 'other>;
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WrapExprBlock` is never constructed
[INFO] [stdout]   --> src/visit.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub struct WrapExprBlock<'ast> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.42s
[INFO] running `Command { std: "docker" "inspect" "16bcf9fe72796cdabcc71a6b372362d3383b2227a648a5c54a593175c7be91ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16bcf9fe72796cdabcc71a6b372362d3383b2227a648a5c54a593175c7be91ed", kill_on_drop: false }`
[INFO] [stdout] 16bcf9fe72796cdabcc71a6b372362d3383b2227a648a5c54a593175c7be91ed