[INFO] fetching crate serialize-to-javascript 0.1.2...
[INFO] checking serialize-to-javascript-0.1.2 against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] extracting crate serialize-to-javascript 0.1.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate serialize-to-javascript 0.1.2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate serialize-to-javascript 0.1.2
[INFO] tweaked toml for crates.io crate serialize-to-javascript 0.1.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serialize-to-javascript 0.1.2 on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dad8074e9707b12e3d342afbf5b28005e297a2135c3cd3756f2c32cea5dc863
[INFO] running `Command { std: "docker" "start" "-a" "8dad8074e9707b12e3d342afbf5b28005e297a2135c3cd3756f2c32cea5dc863", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dad8074e9707b12e3d342afbf5b28005e297a2135c3cd3756f2c32cea5dc863", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dad8074e9707b12e3d342afbf5b28005e297a2135c3cd3756f2c32cea5dc863", kill_on_drop: false }`
[INFO] [stdout] 8dad8074e9707b12e3d342afbf5b28005e297a2135c3cd3756f2c32cea5dc863
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47c7482bf85cf2f2b61a7a1a8ad0875d854341c1ddbe2dba75734828eceb3ce0
[INFO] running `Command { std: "docker" "start" "-a" "47c7482bf85cf2f2b61a7a1a8ad0875d854341c1ddbe2dba75734828eceb3ce0", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_json v1.0.150
[INFO] [stderr]     Checking memchr v2.8.1
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serialize-to-javascript-impl v0.1.2
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking serialize-to-javascript v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `Foo` is never constructed
[INFO] [stdout]  --> tests/mixed.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Foo<'a> {
[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_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serialize-to-javascript` (test "mixed") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "47c7482bf85cf2f2b61a7a1a8ad0875d854341c1ddbe2dba75734828eceb3ce0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47c7482bf85cf2f2b61a7a1a8ad0875d854341c1ddbe2dba75734828eceb3ce0", kill_on_drop: false }`
[INFO] [stdout] 47c7482bf85cf2f2b61a7a1a8ad0875d854341c1ddbe2dba75734828eceb3ce0
