[INFO] fetching crate mikino_api 0.9.1...
[INFO] checking mikino_api-0.9.1 against try#0611f7de057c584b8771102fde7aed6c70c71d3b for pr-146440
[INFO] extracting crate mikino_api 0.9.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mikino_api 0.9.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate mikino_api 0.9.1
[INFO] tweaked toml for crates.io crate mikino_api 0.9.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mikino_api 0.9.1 on toolchain 0611f7de057c584b8771102fde7aed6c70c71d3b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mikino_api 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" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6c8d103dd2f0db5e12807fa17ea1261490fe8747700e17736dd2051f45be87a
[INFO] running `Command { std: "docker" "start" "-a" "c6c8d103dd2f0db5e12807fa17ea1261490fe8747700e17736dd2051f45be87a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6c8d103dd2f0db5e12807fa17ea1261490fe8747700e17736dd2051f45be87a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6c8d103dd2f0db5e12807fa17ea1261490fe8747700e17736dd2051f45be87a", kill_on_drop: false }`
[INFO] [stdout] c6c8d103dd2f0db5e12807fa17ea1261490fe8747700e17736dd2051f45be87a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+0611f7de057c584b8771102fde7aed6c70c71d3b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a551c2036460d541db945fa48e3fd66603870ac13d291691d5286730f8bad1de
[INFO] running `Command { std: "docker" "start" "-a" "a551c2036460d541db945fa48e3fd66603870ac13d291691d5286730f8bad1de", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling backtrace v0.3.65
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]     Checking miniz_oxide v0.5.1
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking object v0.28.3
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling syn v1.0.92
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling peg-runtime v0.8.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling peg-macros v0.8.0
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking peg v0.8.0
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling readonly v0.2.1
[INFO] [stderr]     Checking rsmt2 v0.16.0
[INFO] [stderr]     Checking mikino_api v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `NegExpr` is never constructed
[INFO] [stdout]    --> src/check.rs:185:12
[INFO] [stdout]     |
[INFO] [stdout] 185 | pub struct NegExpr<'e, E> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/check.rs:114:45
[INFO] [stdout]     |
[INFO] [stdout] 114 |               fn from(res: CheckRes<'sys>) -> $ty_name {
[INFO] [stdout]     |                                     ----      ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 121 | / wrap! {
[INFO] [stdout] 122 | |     /// Result of a base check, simply wraps a [CheckRes](struct.CheckRes.html).
[INFO] [stdout] 123 | |     BaseRes,
[INFO] [stdout] 124 | |     /// Result of a step check, simply wraps a [CheckRes](struct.CheckRes.html).
[INFO] [stdout] ...   |
[INFO] [stdout] 127 | |     BmcRes,
[INFO] [stdout] 128 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `wrap` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consistently use `'sys`
[INFO] [stdout]     |
[INFO] [stdout] 114 |             fn from(res: CheckRes<'sys>) -> $ty_name<'sys> {
[INFO] [stdout]     |                                                     ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/expr.rs:1049:20
[INFO] [stdout]      |
[INFO] [stdout] 1049 |     pub fn negated(&self) -> NotPExpr<V> {
[INFO] [stdout]      |                    ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]      |                    |
[INFO] [stdout]      |                    the lifetime is elided here
[INFO] [stdout]      |
[INFO] [stdout]      = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 1049 |     pub fn negated(&self) -> NotPExpr<'_, V> {
[INFO] [stdout]      |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/parse.rs:1145:20
[INFO] [stdout]      |
[INFO] [stdout] 1145 | pub fn script(txt: &str) -> Res<ast::script::Block<ast::Expr, ast::Expr>> {
[INFO] [stdout]      |                    ^^^^                            ^^^^^^^^^  ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]      |                    |                               |
[INFO] [stdout]      |                    |                               the same lifetime is hidden here
[INFO] [stdout]      |                    the lifetime is elided here
[INFO] [stdout]      |
[INFO] [stdout]      = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 1145 | pub fn script(txt: &str) -> Res<ast::script::Block<ast::Expr<'_>, ast::Expr<'_>>> {
[INFO] [stdout]      |                                                             ++++           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mikino_api` (lib) due to 1 previous error; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `NegExpr` is never constructed
[INFO] [stdout]    --> src/check.rs:185:12
[INFO] [stdout]     |
[INFO] [stdout] 185 | pub struct NegExpr<'e, E> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]     = note: `#[deny(unused_unconstructable_pub_struct)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/check.rs:114:45
[INFO] [stdout]     |
[INFO] [stdout] 114 |               fn from(res: CheckRes<'sys>) -> $ty_name {
[INFO] [stdout]     |                                     ----      ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                                     |
[INFO] [stdout]     |                                     the lifetime is named here
[INFO] [stdout] ...
[INFO] [stdout] 121 | / wrap! {
[INFO] [stdout] 122 | |     /// Result of a base check, simply wraps a [CheckRes](struct.CheckRes.html).
[INFO] [stdout] 123 | |     BaseRes,
[INFO] [stdout] 124 | |     /// Result of a step check, simply wraps a [CheckRes](struct.CheckRes.html).
[INFO] [stdout] ...   |
[INFO] [stdout] 127 | |     BmcRes,
[INFO] [stdout] 128 | | }
[INFO] [stdout]     | |_- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `wrap` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: consistently use `'sys`
[INFO] [stdout]     |
[INFO] [stdout] 114 |             fn from(res: CheckRes<'sys>) -> $ty_name<'sys> {
[INFO] [stdout]     |                                                     ++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/expr.rs:1049:20
[INFO] [stdout]      |
[INFO] [stdout] 1049 |     pub fn negated(&self) -> NotPExpr<V> {
[INFO] [stdout]      |                    ^^^^^     ^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]      |                    |
[INFO] [stdout]      |                    the lifetime is elided here
[INFO] [stdout]      |
[INFO] [stdout]      = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 1049 |     pub fn negated(&self) -> NotPExpr<'_, V> {
[INFO] [stdout]      |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]     --> src/parse.rs:1145:20
[INFO] [stdout]      |
[INFO] [stdout] 1145 | pub fn script(txt: &str) -> Res<ast::script::Block<ast::Expr, ast::Expr>> {
[INFO] [stdout]      |                    ^^^^                            ^^^^^^^^^  ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]      |                    |                               |
[INFO] [stdout]      |                    |                               the same lifetime is hidden here
[INFO] [stdout]      |                    the lifetime is elided here
[INFO] [stdout]      |
[INFO] [stdout]      = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]      |
[INFO] [stdout] 1145 | pub fn script(txt: &str) -> Res<ast::script::Block<ast::Expr<'_>, ast::Expr<'_>>> {
[INFO] [stdout]      |                                                             ++++           ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mikino_api` (lib test) due to 1 previous error; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a551c2036460d541db945fa48e3fd66603870ac13d291691d5286730f8bad1de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a551c2036460d541db945fa48e3fd66603870ac13d291691d5286730f8bad1de", kill_on_drop: false }`
[INFO] [stdout] a551c2036460d541db945fa48e3fd66603870ac13d291691d5286730f8bad1de
