[INFO] fetching crate filter_cigars 0.0.1...
[INFO] checking filter_cigars-0.0.1 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate filter_cigars 0.0.1 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate filter_cigars 0.0.1
[INFO] finished tweaking crates.io crate filter_cigars 0.0.1
[INFO] tweaked toml for crates.io crate filter_cigars 0.0.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate filter_cigars 0.0.1 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 filter_cigars 0.0.1 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 436129905fe768ad4956f62b040aadae96e63ffcd293c7ac3561dba836225735
[INFO] running `Command { std: "docker" "start" "-a" "436129905fe768ad4956f62b040aadae96e63ffcd293c7ac3561dba836225735", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "436129905fe768ad4956f62b040aadae96e63ffcd293c7ac3561dba836225735", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "436129905fe768ad4956f62b040aadae96e63ffcd293c7ac3561dba836225735", kill_on_drop: false }`
[INFO] [stdout] 436129905fe768ad4956f62b040aadae96e63ffcd293c7ac3561dba836225735
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 48f9f971588f294ee94f2810c25d403087d295a6533f29a4eb0394f0da5fdd8c
[INFO] running `Command { std: "docker" "start" "-a" "48f9f971588f294ee94f2810c25d403087d295a6533f29a4eb0394f0da5fdd8c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling pkg-config v0.3.26
[INFO] [stderr]    Compiling serde_derive v1.0.152
[INFO] [stderr]    Compiling serde v1.0.152
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling rustversion v1.0.11
[INFO] [stderr]    Compiling thiserror v1.0.38
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]     Checking tinyvec v1.6.0
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking aho-corasick v0.7.20
[INFO] [stderr]     Checking regex-syntax v0.6.28
[INFO] [stderr]    Compiling fs-utils v1.1.4
[INFO] [stderr]     Checking percent-encoding v2.2.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking unicode-bidi v0.3.8
[INFO] [stderr]    Compiling unicode-segmentation v1.10.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking form_urlencoded v1.1.0
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.49/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 csv-core v0.1.10
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking ryu v1.0.12
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling bio v0.31.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]     Checking unicode-normalization v0.1.22
[INFO] [stderr]     Checking strum v0.18.0
[INFO] [stderr]     Checking bytecount v0.6.3
[INFO] [stderr]     Checking ieee754 v0.2.6
[INFO] [stderr]    Compiling jobserver v0.1.25
[INFO] [stderr]     Checking linear-map v1.2.0
[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" "48f9f971588f294ee94f2810c25d403087d295a6533f29a4eb0394f0da5fdd8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48f9f971588f294ee94f2810c25d403087d295a6533f29a4eb0394f0da5fdd8c", kill_on_drop: false }`
[INFO] [stdout] 48f9f971588f294ee94f2810c25d403087d295a6533f29a4eb0394f0da5fdd8c
