[INFO] fetching crate asciifire 0.1.2...
[INFO] checking asciifire-0.1.2 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate asciifire 0.1.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate asciifire 0.1.2
[INFO] finished tweaking crates.io crate asciifire 0.1.2
[INFO] tweaked toml for crates.io crate asciifire 0.1.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate asciifire 0.1.2 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate asciifire 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6aa80c146fba7be7911e44a0c8b1a979ad1dbc6d9fb748a9a73ba16e1f44d96d
[INFO] running `Command { std: "docker" "start" "-a" "6aa80c146fba7be7911e44a0c8b1a979ad1dbc6d9fb748a9a73ba16e1f44d96d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aa80c146fba7be7911e44a0c8b1a979ad1dbc6d9fb748a9a73ba16e1f44d96d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aa80c146fba7be7911e44a0c8b1a979ad1dbc6d9fb748a9a73ba16e1f44d96d", kill_on_drop: false }`
[INFO] [stdout] 6aa80c146fba7be7911e44a0c8b1a979ad1dbc6d9fb748a9a73ba16e1f44d96d
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c365fbf6bdc7a548469164f75c7af6ba8bc04c673284c8959d10e53fbb035cc
[INFO] running `Command { std: "docker" "start" "-a" "5c365fbf6bdc7a548469164f75c7af6ba8bc04c673284c8959d10e53fbb035cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling crossbeam-utils v0.8.12
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.11
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]     Checking once_cell v1.15.0
[INFO] [stderr]     Checking crc32fast v1.3.2
[INFO] [stderr]     Checking miniz_oxide v0.5.4
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking predicates-core v1.0.3
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]     Checking normalize-line-endings v0.3.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking spin v0.9.4
[INFO] [stderr]     Checking termtree v0.2.4
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking weezl v0.1.7
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.46/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking predicates-tree v1.0.5
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking half v2.1.0
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking lebe v0.5.2
[INFO] [stderr]    Compiling anyhow v1.0.65
[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" "5c365fbf6bdc7a548469164f75c7af6ba8bc04c673284c8959d10e53fbb035cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c365fbf6bdc7a548469164f75c7af6ba8bc04c673284c8959d10e53fbb035cc", kill_on_drop: false }`
[INFO] [stdout] 5c365fbf6bdc7a548469164f75c7af6ba8bc04c673284c8959d10e53fbb035cc