[INFO] fetching crate serde_v2 0.1.0...
[INFO] testing serde_v2-0.1.0 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate serde_v2 0.1.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate serde_v2 0.1.0
[INFO] finished tweaking crates.io crate serde_v2 0.1.0
[INFO] tweaked toml for crates.io crate serde_v2 0.1.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate serde_v2 0.1.0 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68be856a469c89b433ba52b5ea5efc5c999fbc63763adf1d2d16eb1ee5035e23
[INFO] running `Command { std: "docker" "start" "-a" "68be856a469c89b433ba52b5ea5efc5c999fbc63763adf1d2d16eb1ee5035e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68be856a469c89b433ba52b5ea5efc5c999fbc63763adf1d2d16eb1ee5035e23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68be856a469c89b433ba52b5ea5efc5c999fbc63763adf1d2d16eb1ee5035e23", kill_on_drop: false }`
[INFO] [stdout] 68be856a469c89b433ba52b5ea5efc5c999fbc63763adf1d2d16eb1ee5035e23
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f9e34d5f90db37a867839b0b6421173185f0456479ddb028f865f71e35fca4d1
[INFO] running `Command { std: "docker" "start" "-a" "f9e34d5f90db37a867839b0b6421173185f0456479ddb028f865f71e35fca4d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_v2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.44s
[INFO] running `Command { std: "docker" "inspect" "f9e34d5f90db37a867839b0b6421173185f0456479ddb028f865f71e35fca4d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9e34d5f90db37a867839b0b6421173185f0456479ddb028f865f71e35fca4d1", kill_on_drop: false }`
[INFO] [stdout] f9e34d5f90db37a867839b0b6421173185f0456479ddb028f865f71e35fca4d1
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 10205d739ab7d9bdcafa42808facb2a9b66d971bb95daa5a120e364f233cb981
[INFO] running `Command { std: "docker" "start" "-a" "10205d739ab7d9bdcafa42808facb2a9b66d971bb95daa5a120e364f233cb981", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_v2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "10205d739ab7d9bdcafa42808facb2a9b66d971bb95daa5a120e364f233cb981", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "10205d739ab7d9bdcafa42808facb2a9b66d971bb95daa5a120e364f233cb981", kill_on_drop: false }`
[INFO] [stdout] 10205d739ab7d9bdcafa42808facb2a9b66d971bb95daa5a120e364f233cb981
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 52aa4164601a20cb5af5c1336b0bdbf12db4bc6530e2a869e3031054970626fb
[INFO] running `Command { std: "docker" "start" "-a" "52aa4164601a20cb5af5c1336b0bdbf12db4bc6530e2a869e3031054970626fb", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/serde_v2-0411e9c9fc05054b)
[INFO] [stdout] running 11 tests
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/deps/serde_v2-0411e9c9fc05054b` (signal: 5, SIGTRAP: trace/breakpoint trap)
[INFO] running `Command { std: "docker" "inspect" "52aa4164601a20cb5af5c1336b0bdbf12db4bc6530e2a869e3031054970626fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52aa4164601a20cb5af5c1336b0bdbf12db4bc6530e2a869e3031054970626fb", kill_on_drop: false }`
[INFO] [stdout] 52aa4164601a20cb5af5c1336b0bdbf12db4bc6530e2a869e3031054970626fb