[INFO] fetching crate reserde 0.0.1...
[INFO] testing reserde-0.0.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate reserde 0.0.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate reserde 0.0.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate reserde 0.0.1
[INFO] finished tweaking crates.io crate reserde 0.0.1
[INFO] tweaked toml for crates.io crate reserde 0.0.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate reserde 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded strum_macros v0.19.2
[INFO] [stderr]   Downloaded enum_properties v0.2.1
[INFO] [stderr]   Downloaded strum v0.19.2
[INFO] [stderr]   Downloaded linkme-impl v0.2.2
[INFO] [stderr]   Downloaded indexmap v1.5.1
[INFO] [stderr]   Downloaded linkme v0.2.2
[INFO] [stderr]   Downloaded serde_bencode v0.2.2
[INFO] [stderr]   Downloaded taml v0.0.1
[INFO] [stderr]   Downloaded try_match v0.2.2
[INFO] [stderr]   Downloaded serde_taml v0.0.1
[INFO] [stderr]   Downloaded try_match_inner v0.2.0
[INFO] [stderr]   Downloaded gnaw v0.0.1
[INFO] [stderr]   Downloaded debugless-unwrap v0.0.1
[INFO] [stderr]   Downloaded lazy-transform-str v0.0.1
[INFO] [stderr]   Downloaded cervine v0.0.2
[INFO] [stderr]   Downloaded serde-detach v0.0.1
[INFO] [stderr]   Downloaded serde-object v0.0.0-alpha.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fd7d8ab0a75ddf1175d088544901e44cf6d164f20a1c170efee0a7a64894dbb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9fd7d8ab0a75ddf1175d088544901e44cf6d164f20a1c170efee0a7a64894dbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fd7d8ab0a75ddf1175d088544901e44cf6d164f20a1c170efee0a7a64894dbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fd7d8ab0a75ddf1175d088544901e44cf6d164f20a1c170efee0a7a64894dbb", kill_on_drop: false }`
[INFO] [stdout] 9fd7d8ab0a75ddf1175d088544901e44cf6d164f20a1c170efee0a7a64894dbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 642907cea8de3427a56160ff666ea7c20e117e51360307389fcbd4c196cf2c49
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "642907cea8de3427a56160ff666ea7c20e117e51360307389fcbd4c196cf2c49", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling cervine v0.0.2
[INFO] [stderr]    Compiling gnaw v0.0.1
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]    Compiling itoa v0.4.6
[INFO] [stderr]    Compiling argh_shared v0.1.1
[INFO] [stderr]    Compiling enum_properties v0.2.1
[INFO] [stderr]    Compiling dtoa v0.4.6
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling debugless-unwrap v0.0.1
[INFO] [stderr]    Compiling half v1.6.0
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]    Compiling indexmap v1.5.1
[INFO] [stderr]    Compiling smartstring v0.2.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling lazy-transform-str v0.0.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling bincode v1.3.1
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling serde-detach v0.0.1
[INFO] [stderr]    Compiling serde_yaml v0.8.13
[INFO] [stderr]    Compiling serde_cbor v0.11.1
[INFO] [stderr]    Compiling quick-xml v0.18.1
[INFO] [stderr]    Compiling serde_bencode v0.2.2
[INFO] [stderr]    Compiling try_match_inner v0.2.0
[INFO] [stderr]    Compiling linkme-impl v0.2.2
[INFO] [stderr]    Compiling logos-derive v0.11.5
[INFO] [stderr]    Compiling argh_derive v0.1.1
[INFO] [stderr]    Compiling strum_macros v0.19.2
[INFO] [stderr]    Compiling linkme v0.2.2
[INFO] [stderr]    Compiling try_match v0.2.2
[INFO] [stderr]    Compiling serde-object v0.0.0-alpha.0
[INFO] [stdout] error: expected `,`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-object-0.0.0-alpha.0/src/lib.rs:825:44
[INFO] [stdout]     |
[INFO] [stdout] 825 |                 let key = try_match!(Object::DualVariantKey { name, index } = self_).unwrap();
[INFO] [stdout]     |                                            ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling strum v0.19.2
[INFO] [stderr]    Compiling argh v0.1.3
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serde-object`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "642907cea8de3427a56160ff666ea7c20e117e51360307389fcbd4c196cf2c49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "642907cea8de3427a56160ff666ea7c20e117e51360307389fcbd4c196cf2c49", kill_on_drop: false }`
[INFO] [stdout] 642907cea8de3427a56160ff666ea7c20e117e51360307389fcbd4c196cf2c49