[INFO] fetching crate mycalc 0.0.0...
[INFO] checking mycalc-0.0.0 against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] extracting crate mycalc 0.0.0 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mycalc 0.0.0
[INFO] finished tweaking crates.io crate mycalc 0.0.0
[INFO] tweaked toml for crates.io crate mycalc 0.0.0 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mycalc 0.0.0 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 mycalc 0.0.0 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7bfa17f1a9e8538bc707f1c800b12b6e30e4a1e49d7237df09c4bba69fa5ae02
[INFO] running `Command { std: "docker" "start" "-a" "7bfa17f1a9e8538bc707f1c800b12b6e30e4a1e49d7237df09c4bba69fa5ae02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bfa17f1a9e8538bc707f1c800b12b6e30e4a1e49d7237df09c4bba69fa5ae02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bfa17f1a9e8538bc707f1c800b12b6e30e4a1e49d7237df09c4bba69fa5ae02", kill_on_drop: false }`
[INFO] [stdout] 7bfa17f1a9e8538bc707f1c800b12b6e30e4a1e49d7237df09c4bba69fa5ae02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] cecf62461e0b1f4dd44c42635c3eb9abf0c56371c483b328b8859ce4c57ca37f
[INFO] running `Command { std: "docker" "start" "-a" "cecf62461e0b1f4dd44c42635c3eb9abf0c56371c483b328b8859ce4c57ca37f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling xml-rs v0.8.8
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling atomic-polyfill v1.0.2
[INFO] [stderr]     Checking critical-section v1.1.1
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking arrayvec v0.7.2
[INFO] [stderr]    Compiling ahash v0.7.6
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking simd-adler32 v0.3.5
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]    Compiling once_cell v1.17.1
[INFO] [stderr]     Checking dlib v0.5.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking bytemuck v1.13.1
[INFO] [stderr]     Checking float-cmp v0.9.0
[INFO] [stderr]    Compiling regex-syntax v0.7.1
[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 miniz_oxide v0.7.1
[INFO] [stderr]     Checking fdeflate v0.3.0
[INFO] [stderr]    Compiling wayland-sys v0.29.5
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]     Checking strict-num v0.1.0
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking arrayref v0.3.7
[INFO] [stderr]    Compiling cfg_aliases v0.1.1
[INFO] [stderr]    Compiling aho-corasick v1.0.1
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]     Checking xmlparser v0.13.5
[INFO] [stderr]     Checking kurbo v0.9.4
[INFO] [stderr]    Compiling getrandom v0.2.9
[INFO] [stderr]    Compiling slotmap v1.0.6
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[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" "cecf62461e0b1f4dd44c42635c3eb9abf0c56371c483b328b8859ce4c57ca37f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cecf62461e0b1f4dd44c42635c3eb9abf0c56371c483b328b8859ce4c57ca37f", kill_on_drop: false }`
[INFO] [stdout] cecf62461e0b1f4dd44c42635c3eb9abf0c56371c483b328b8859ce4c57ca37f
