[INFO] fetching crate wco-rs 0.1.2...
[INFO] checking wco-rs-0.1.2 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate wco-rs 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate wco-rs 0.1.2
[INFO] finished tweaking crates.io crate wco-rs 0.1.2
[INFO] tweaked toml for crates.io crate wco-rs 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wco-rs 0.1.2 on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wco-rs 0.1.2 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c55d2d237fde729278d20934c2b96e373e774d2789799c603c81fa38f54b2e8
[INFO] running `Command { std: "docker" "start" "-a" "4c55d2d237fde729278d20934c2b96e373e774d2789799c603c81fa38f54b2e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c55d2d237fde729278d20934c2b96e373e774d2789799c603c81fa38f54b2e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c55d2d237fde729278d20934c2b96e373e774d2789799c603c81fa38f54b2e8", kill_on_drop: false }`
[INFO] [stdout] 4c55d2d237fde729278d20934c2b96e373e774d2789799c603c81fa38f54b2e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68940da877104bd1ffe9bd971b4db58271222acd444b01f31b2fa83e3cc5c2d0
[INFO] running `Command { std: "docker" "start" "-a" "68940da877104bd1ffe9bd971b4db58271222acd444b01f31b2fa83e3cc5c2d0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]     Checking pin-project-lite v0.2.12
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling polling v2.8.0
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking unicode-bidi v0.3.13
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]    Compiling curl v0.4.44
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking aho-corasick v1.0.1
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking parking v2.1.0
[INFO] [stderr]    Compiling isahc v1.7.2
[INFO] [stderr]     Checking regex-syntax v0.7.4
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking encoding_rs v0.8.32
[INFO] [stderr]     Checking castaway v0.1.2
[INFO] [stderr]     Checking base64 v0.20.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking async-channel v1.8.0
[INFO] [stderr]     Checking http v0.2.9
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.56/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: there is a feature with a similar name: `proc_macro_span_file`
[INFO] [stdout]    |
[INFO] [stdout] 92 -     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout] 92 +     feature(proc_macro_span, proc_macro_span_file)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking sluice v0.5.5
[INFO] [stderr]     Checking parking_lot_core v0.9.7
[INFO] [stderr]     Checking socket2 v0.4.9
[INFO] [stderr]     Checking socket2 v0.5.3
[INFO] [stderr]     Checking mio v0.8.6
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[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" "68940da877104bd1ffe9bd971b4db58271222acd444b01f31b2fa83e3cc5c2d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68940da877104bd1ffe9bd971b4db58271222acd444b01f31b2fa83e3cc5c2d0", kill_on_drop: false }`
[INFO] [stdout] 68940da877104bd1ffe9bd971b4db58271222acd444b01f31b2fa83e3cc5c2d0
