[INFO] fetching crate persy 1.1.6...
[INFO] testing persy-1.1.6 against 1.60.0 for beta-1.61-1
[INFO] extracting crate persy 1.1.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate persy 1.1.6 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate persy 1.1.6
[INFO] finished tweaking crates.io crate persy 1.1.6
[INFO] tweaked toml for crates.io crate persy 1.1.6 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate persy 1.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded unsigned-varint v0.7.1
[INFO] [stderr]   Downloaded syn v1.0.83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b70b7fa47b921a26e2deb09e41b45060830b26bce43beea59162aaee12b78b60
[INFO] running `Command { std: "docker" "start" "-a" "b70b7fa47b921a26e2deb09e41b45060830b26bce43beea59162aaee12b78b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b70b7fa47b921a26e2deb09e41b45060830b26bce43beea59162aaee12b78b60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b70b7fa47b921a26e2deb09e41b45060830b26bce43beea59162aaee12b78b60", kill_on_drop: false }`
[INFO] [stdout] b70b7fa47b921a26e2deb09e41b45060830b26bce43beea59162aaee12b78b60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=warn" "-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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c9bf7b84ce594a2b4160554c961e57c8d3dba9bdf65b8efa233a2c5117c2ff6b
[INFO] running `Command { std: "docker" "start" "-a" "c9bf7b84ce594a2b4160554c961e57c8d3dba9bdf65b8efa233a2c5117c2ff6b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.83
[INFO] [stderr]    Compiling ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling crc-catalog v1.1.1
[INFO] [stderr]    Compiling unsigned-varint v0.7.1
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]    Compiling zigzag v0.1.0
[INFO] [stderr]    Compiling crc v2.1.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling persy v1.1.6 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `persy`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name persy --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 -C metadata=df2005552a6c3db5 -C extra-filename=-df2005552a6c3db5 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern crc=/opt/rustwide/target/debug/deps/libcrc-5d5d46897b9e59d0.rmeta --extern data_encoding=/opt/rustwide/target/debug/deps/libdata_encoding-794a2a3266b41348.rmeta --extern fs2=/opt/rustwide/target/debug/deps/libfs2-5e8d27e814cfac43.rmeta --extern linked_hash_map=/opt/rustwide/target/debug/deps/liblinked_hash_map-756d4373557a55af.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-d8097633d37d3517.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-e99efd288ab9d001.rmeta --extern unsigned_varint=/opt/rustwide/target/debug/deps/libunsigned_varint-82256f039c9a4dee.rmeta --extern zigzag=/opt/rustwide/target/debug/deps/libzigzag-a02d4aa73a62a4a4.rmeta --cap-lints=warn` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "c9bf7b84ce594a2b4160554c961e57c8d3dba9bdf65b8efa233a2c5117c2ff6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9bf7b84ce594a2b4160554c961e57c8d3dba9bdf65b8efa233a2c5117c2ff6b", kill_on_drop: false }`
[INFO] [stdout] c9bf7b84ce594a2b4160554c961e57c8d3dba9bdf65b8efa233a2c5117c2ff6b