[INFO] fetching crate scdb 0.2.1...
[INFO] building scdb-0.2.1 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate scdb 0.2.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate scdb 0.2.1
[INFO] finished tweaking crates.io crate scdb 0.2.1
[INFO] tweaked toml for crates.io crate scdb 0.2.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate scdb 0.2.1 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate scdb 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7a511fdf5c37b4a6869d21ff8f644365953fc07e4af53f0433a3a7e9a4880c9
[INFO] running `Command { std: "docker" "start" "-a" "d7a511fdf5c37b4a6869d21ff8f644365953fc07e4af53f0433a3a7e9a4880c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7a511fdf5c37b4a6869d21ff8f644365953fc07e4af53f0433a3a7e9a4880c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7a511fdf5c37b4a6869d21ff8f644365953fc07e4af53f0433a3a7e9a4880c9", kill_on_drop: false }`
[INFO] [stdout] d7a511fdf5c37b4a6869d21ff8f644365953fc07e4af53f0433a3a7e9a4880c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a623e40fcaab957cfc42f403bb14cdd2d2d309c8c8e7ac5ebcc4586796ae51b4
[INFO] running `Command { std: "docker" "start" "-a" "a623e40fcaab957cfc42f403bb14cdd2d2d309c8c8e7ac5ebcc4586796ae51b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling iana-time-zone v0.1.51
[INFO] [stderr]    Compiling getrandom v0.2.7
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling chrono v0.4.22
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling clokwerk v0.4.0
[INFO] [stderr]    Compiling twox-hash v1.6.3
[INFO] [stderr]    Compiling scdb v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.46s
[INFO] running `Command { std: "docker" "inspect" "a623e40fcaab957cfc42f403bb14cdd2d2d309c8c8e7ac5ebcc4586796ae51b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a623e40fcaab957cfc42f403bb14cdd2d2d309c8c8e7ac5ebcc4586796ae51b4", kill_on_drop: false }`
[INFO] [stdout] a623e40fcaab957cfc42f403bb14cdd2d2d309c8c8e7ac5ebcc4586796ae51b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c0fa890c89fee66707399292344ea2ff1a44f71ffbce4a3ea8aea92d2ed4d8d
[INFO] running `Command { std: "docker" "start" "-a" "3c0fa890c89fee66707399292344ea2ff1a44f71ffbce4a3ea8aea92d2ed4d8d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]    Compiling futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-io v0.3.24
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling ciborium-io v0.2.0
[INFO] [stderr]    Compiling plotters-backend v0.3.4
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr]    Compiling half v1.8.2
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3c0fa890c89fee66707399292344ea2ff1a44f71ffbce4a3ea8aea92d2ed4d8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c0fa890c89fee66707399292344ea2ff1a44f71ffbce4a3ea8aea92d2ed4d8d", kill_on_drop: false }`
[INFO] [stdout] 3c0fa890c89fee66707399292344ea2ff1a44f71ffbce4a3ea8aea92d2ed4d8d