[INFO] fetching crate wrenlet 0.1.1...
[INFO] checking wrenlet-0.1.1 against master#8a703520e80d87d4423c01f9d4fbc9e5f6533a02 for pr-154205-1
[INFO] extracting crate wrenlet 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate wrenlet 0.1.1
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate wrenlet 0.1.1
[INFO] tweaked toml for crates.io crate wrenlet 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate wrenlet 0.1.1 on toolchain 8a703520e80d87d4423c01f9d4fbc9e5f6533a02
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wrenlet 0.1.1 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" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded variadics_please v1.1.0
[INFO] [stderr]   Downloaded error_set_impl v0.9.0
[INFO] [stderr]   Downloaded error_set v0.9.0
[INFO] [stderr]   Downloaded cc v1.2.44
[INFO] [stderr]   Downloaded wrenlet-sys v0.1.0
[INFO] [stderr]   Downloaded syn v2.0.108
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 537454bbefa1319cf468b7d44b4cb5bfc2897104f4f9d04a2b33e45b88967242
[INFO] running `Command { std: "docker" "start" "-a" "537454bbefa1319cf468b7d44b4cb5bfc2897104f4f9d04a2b33e45b88967242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "537454bbefa1319cf468b7d44b4cb5bfc2897104f4f9d04a2b33e45b88967242", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537454bbefa1319cf468b7d44b4cb5bfc2897104f4f9d04a2b33e45b88967242", kill_on_drop: false }`
[INFO] [stdout] 537454bbefa1319cf468b7d44b4cb5bfc2897104f4f9d04a2b33e45b88967242
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8a703520e80d87d4423c01f9d4fbc9e5f6533a02" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09e079fee8a790cff508e683c170ce3122da8dc3f8662c6463ce70dccad6abc3
[INFO] running `Command { std: "docker" "start" "-a" "09e079fee8a790cff508e683c170ce3122da8dc3f8662c6463ce70dccad6abc3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling cc v1.2.44
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling wrenlet-sys v0.1.0
[INFO] [stderr]    Compiling syn v2.0.108
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling error_set_impl v0.9.0
[INFO] [stderr]    Compiling variadics_please v1.1.0
[INFO] [stderr]     Checking error_set v0.9.0
[INFO] [stderr]     Checking wrenlet v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/foreign.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl ForeignVTable {
[INFO] [stdout]    | ------------------ associated function in this implementation
[INFO] [stdout] 11 |     const fn new<T>() -> &'static Self
[INFO] [stdout]    |              ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FakeForeign` is never constructed
[INFO] [stdout]   --> src/foreign.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub(crate) struct FakeForeign;
[INFO] [stdout]    |                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/handle.rs:31:27
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct ValueHandle<U>(pub(crate) RcHandle<U>);
[INFO] [stdout]    |            -----------    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/handle.rs:47:26
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub struct CallHandle<U>(pub(crate) RcHandle<U>);
[INFO] [stdout]    |            ----------    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/foreign.rs:11:14
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl ForeignVTable {
[INFO] [stdout]    | ------------------ associated function in this implementation
[INFO] [stdout] 11 |     const fn new<T>() -> &'static Self
[INFO] [stdout]    |              ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FakeForeign` is never constructed
[INFO] [stdout]   --> src/foreign.rs:38:19
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub(crate) struct FakeForeign;
[INFO] [stdout]    |                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/handle.rs:31:27
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct ValueHandle<U>(pub(crate) RcHandle<U>);
[INFO] [stdout]    |            -----------    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/handle.rs:47:26
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub struct CallHandle<U>(pub(crate) RcHandle<U>);
[INFO] [stdout]    |            ----------    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.32s
[INFO] running `Command { std: "docker" "inspect" "09e079fee8a790cff508e683c170ce3122da8dc3f8662c6463ce70dccad6abc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09e079fee8a790cff508e683c170ce3122da8dc3f8662c6463ce70dccad6abc3", kill_on_drop: false }`
[INFO] [stdout] 09e079fee8a790cff508e683c170ce3122da8dc3f8662c6463ce70dccad6abc3