[INFO] fetching crate chord-web 0.1.21...
[INFO] checking chord-web-0.1.21 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate chord-web 0.1.21 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate chord-web 0.1.21
[INFO] finished tweaking crates.io crate chord-web 0.1.21
[INFO] tweaked toml for crates.io crate chord-web 0.1.21 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate chord-web 0.1.21 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 chord-web 0.1.21 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7c2c359187aea34bba8a24e90dc6cd514c105d40d6cde6d310cecb4bbaf4040a
[INFO] running `Command { std: "docker" "start" "-a" "7c2c359187aea34bba8a24e90dc6cd514c105d40d6cde6d310cecb4bbaf4040a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c2c359187aea34bba8a24e90dc6cd514c105d40d6cde6d310cecb4bbaf4040a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c2c359187aea34bba8a24e90dc6cd514c105d40d6cde6d310cecb4bbaf4040a", kill_on_drop: false }`
[INFO] [stdout] 7c2c359187aea34bba8a24e90dc6cd514c105d40d6cde6d310cecb4bbaf4040a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 021f9236039ef2a3455efa6bea3592d8bef1fa76de6a7dac0aa7042724b2b8ab
[INFO] running `Command { std: "docker" "start" "-a" "021f9236039ef2a3455efa6bea3592d8bef1fa76de6a7dac0aa7042724b2b8ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling syn v1.0.103
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling parking_lot_core v0.9.4
[INFO] [stderr]    Compiling serde_derive v1.0.147
[INFO] [stderr]    Compiling tokio v1.21.2
[INFO] [stderr]    Compiling serde v1.0.147
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]    Compiling openssl v0.10.42
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling rustls v0.20.7
[INFO] [stderr]    Compiling encoding_rs v0.8.31
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stdout] error[E0422]: cannot find struct, variant or union type `LineColumn` in crate `proc_macro`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/src/wrapper.rs:479:33
[INFO] [stdout]     |
[INFO] [stdout] 479 |                 let proc_macro::LineColumn { line, column } = s.start();
[INFO] [stdout]     |                                 ^^^^^^^^^^ not found in `proc_macro`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::LineColumn;
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::fallback::LineColumn;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `LineColumn`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 479 -                 let proc_macro::LineColumn { line, column } = s.start();
[INFO] [stdout] 479 +                 let LineColumn { line, column } = s.start();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0422]: cannot find struct, variant or union type `LineColumn` in crate `proc_macro`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/src/wrapper.rs:496:33
[INFO] [stdout]     |
[INFO] [stdout] 496 |                 let proc_macro::LineColumn { line, column } = s.end();
[INFO] [stdout]     |                                 ^^^^^^^^^^ not found in `proc_macro`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these structs
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::LineColumn;
[INFO] [stdout]     |
[INFO] [stdout]   1 + use crate::fallback::LineColumn;
[INFO] [stdout]     |
[INFO] [stdout] help: if you import `LineColumn`, refer to it directly
[INFO] [stdout]     |
[INFO] [stdout] 496 -                 let proc_macro::LineColumn { line, column } = s.end();
[INFO] [stdout] 496 +                 let LineColumn { line, column } = s.end();
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.47/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]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde_json v1.0.87
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking rustls-pemfile v1.0.1
[INFO] [stderr]     Checking local-waker v0.1.3
[INFO] [stdout] Some errors have detailed explanations: E0422, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0422`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "021f9236039ef2a3455efa6bea3592d8bef1fa76de6a7dac0aa7042724b2b8ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "021f9236039ef2a3455efa6bea3592d8bef1fa76de6a7dac0aa7042724b2b8ab", kill_on_drop: false }`
[INFO] [stdout] 021f9236039ef2a3455efa6bea3592d8bef1fa76de6a7dac0aa7042724b2b8ab
