[INFO] fetching crate serde_token 0.0.2...
[INFO] checking serde_token-0.0.2 against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] extracting crate serde_token 0.0.2 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate serde_token 0.0.2
[INFO] finished tweaking crates.io crate serde_token 0.0.2
[INFO] tweaked toml for crates.io crate serde_token 0.0.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_token 0.0.2 on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "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" "+b1f2594eac607c1f051534800237eeedb5590a49" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding futures v0.1.31 (available: v0.3.31)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a01ff5603e91f5f53e7a25d85433fdaa3ce0b0f26fd9530e8a4037fb60cf1785
[INFO] running `Command { std: "docker" "start" "-a" "a01ff5603e91f5f53e7a25d85433fdaa3ce0b0f26fd9530e8a4037fb60cf1785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a01ff5603e91f5f53e7a25d85433fdaa3ce0b0f26fd9530e8a4037fb60cf1785", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a01ff5603e91f5f53e7a25d85433fdaa3ce0b0f26fd9530e8a4037fb60cf1785", kill_on_drop: false }`
[INFO] [stdout] a01ff5603e91f5f53e7a25d85433fdaa3ce0b0f26fd9530e8a4037fb60cf1785
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9419d26aaa535017cda1c120bfe3cdf35a1dbe70fb19680960eac0c49dc73639
[INFO] running `Command { std: "docker" "start" "-a" "9419d26aaa535017cda1c120bfe3cdf35a1dbe70fb19680960eac0c49dc73639", kill_on_drop: false }`
[INFO] [stderr]     Checking serde-transcode v1.1.1
[INFO] [stderr]     Checking serde_token v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/test.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn tokens(json_str: &str) -> Vec<Token> {
[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]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 43 | fn tokens(json_str: &str) -> Vec<Token<'_>> {
[INFO] [stdout]    |                                       ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "9419d26aaa535017cda1c120bfe3cdf35a1dbe70fb19680960eac0c49dc73639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9419d26aaa535017cda1c120bfe3cdf35a1dbe70fb19680960eac0c49dc73639", kill_on_drop: false }`
[INFO] [stdout] 9419d26aaa535017cda1c120bfe3cdf35a1dbe70fb19680960eac0c49dc73639