[INFO] cloning repository https://github.com/mjibson/plan9
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mjibson/plan9" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjibson%2Fplan9", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjibson%2Fplan9'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 26c438c7e603de73cdfbec1f2dad3ed80225e86c
[INFO] testing mjibson/plan9 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjibson%2Fplan9" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mjibson/plan9
[INFO] finished tweaking git repo https://github.com/mjibson/plan9
[INFO] tweaked toml for git repo https://github.com/mjibson/plan9 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mjibson/plan9 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mjibson/plan9 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" "+33835004928d3bf65db4d4712e1330766263b0bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dirs-sys v0.3.7
[INFO] [stderr]   Downloaded thiserror v1.0.37
[INFO] [stderr]   Downloaded dirs v4.0.0
[INFO] [stderr]   Downloaded xdg v2.4.1
[INFO] [stderr]   Downloaded redox_users v0.4.3
[INFO] [stderr]   Downloaded toml v0.5.9
[INFO] [stderr]   Downloaded thiserror-impl v1.0.37
[INFO] [stderr]   Downloaded proc-macro2 v1.0.47
[INFO] [stderr]   Downloaded serde_repr v0.1.9
[INFO] [stderr]   Downloaded diff v0.1.13
[INFO] [stderr]   Downloaded itoa v1.0.4
[INFO] [stderr]   Downloaded addr2line v0.17.0
[INFO] [stderr]   Downloaded unicode-ident v1.0.5
[INFO] [stderr]   Downloaded nine v0.5.0
[INFO] [stderr]   Downloaded cc v1.0.73
[INFO] [stderr]   Downloaded lsp-types v0.93.1
[INFO] [stderr]   Downloaded miniz_oxide v0.5.4
[INFO] [stderr]   Downloaded anyhow v1.0.65
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.4
[INFO] [stderr]   Downloaded serde_derive v1.0.145
[INFO] [stderr]   Downloaded serde v1.0.145
[INFO] [stderr]   Downloaded backtrace v0.3.66
[INFO] [stderr]   Downloaded aho-corasick v0.7.19
[INFO] [stderr]   Downloaded serde_json v1.0.86
[INFO] [stderr]   Downloaded syn v1.0.102
[INFO] [stderr]   Downloaded object v0.29.0
[INFO] [stderr]   Downloaded libc v0.2.135
[INFO] [stderr]   Downloaded gimli v0.26.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 700ba1c9ba794416e2ada22d4d0687ffaebea516701a5b6f8bb9801499d1bb0e
[INFO] running `Command { std: "docker" "start" "-a" "700ba1c9ba794416e2ada22d4d0687ffaebea516701a5b6f8bb9801499d1bb0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "700ba1c9ba794416e2ada22d4d0687ffaebea516701a5b6f8bb9801499d1bb0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "700ba1c9ba794416e2ada22d4d0687ffaebea516701a5b6f8bb9801499d1bb0e", kill_on_drop: false }`
[INFO] [stdout] 700ba1c9ba794416e2ada22d4d0687ffaebea516701a5b6f8bb9801499d1bb0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a73b3a28d2b686a3ba7f1fbf031ff495883512023323d07a46349fdc8934f8ce
[INFO] running `Command { std: "docker" "start" "-a" "a73b3a28d2b686a3ba7f1fbf031ff495883512023323d07a46349fdc8934f8ce", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling serde_derive v1.0.145
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling adler v1.0.2
[INFO] [stderr]    Compiling gimli v0.26.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling object v0.29.0
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]    Compiling serde_json v1.0.86
[INFO] [stderr]    Compiling miniz_oxide v0.5.4
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]    Compiling unicode-bidi v0.3.8
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]    Compiling aho-corasick v0.7.19
[INFO] [stderr]    Compiling ryu v1.0.11
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[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 form_urlencoded v1.1.0
[INFO] [stderr]    Compiling itoa v1.0.4
[INFO] [stderr]    Compiling diff v0.1.13
[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" "a73b3a28d2b686a3ba7f1fbf031ff495883512023323d07a46349fdc8934f8ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a73b3a28d2b686a3ba7f1fbf031ff495883512023323d07a46349fdc8934f8ce", kill_on_drop: false }`
[INFO] [stdout] a73b3a28d2b686a3ba7f1fbf031ff495883512023323d07a46349fdc8934f8ce
