[INFO] cloning repository https://github.com/longfangsong/collection-bench
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/longfangsong/collection-bench" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flongfangsong%2Fcollection-bench", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flongfangsong%2Fcollection-bench'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 521909a6b40a9ad54fbc730d61fd25ad2ad8d4ae
[INFO] checking longfangsong/collection-bench against master#83dcdb3a5dad0ed1e3e1fadc848d3f7727b41aa5 for pr-128425
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flongfangsong%2Fcollection-bench" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/longfangsong/collection-bench on toolchain 83dcdb3a5dad0ed1e3e1fadc848d3f7727b41aa5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+83dcdb3a5dad0ed1e3e1fadc848d3f7727b41aa5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/longfangsong/collection-bench
[INFO] finished tweaking git repo https://github.com/longfangsong/collection-bench
[INFO] tweaked toml for git repo https://github.com/longfangsong/collection-bench written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/longfangsong/collection-bench 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" "+83dcdb3a5dad0ed1e3e1fadc848d3f7727b41aa5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking longfangsong/collection-bench against try#063c08dd8db6ff113bb809c130456f1781abe72c for pr-128425
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flongfangsong%2Fcollection-bench" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/longfangsong/collection-bench on toolchain 063c08dd8db6ff113bb809c130456f1781abe72c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+063c08dd8db6ff113bb809c130456f1781abe72c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/longfangsong/collection-bench
[INFO] finished tweaking git repo https://github.com/longfangsong/collection-bench
[INFO] tweaked toml for git repo https://github.com/longfangsong/collection-bench written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/longfangsong/collection-bench 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" "+063c08dd8db6ff113bb809c130456f1781abe72c" "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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+063c08dd8db6ff113bb809c130456f1781abe72c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 78a8aad153117f89472a33e37c17db7b4f4d62ada06f940de2762eaa4be34a3a
[INFO] running `Command { std: "docker" "start" "-a" "78a8aad153117f89472a33e37c17db7b4f4d62ada06f940de2762eaa4be34a3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78a8aad153117f89472a33e37c17db7b4f4d62ada06f940de2762eaa4be34a3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78a8aad153117f89472a33e37c17db7b4f4d62ada06f940de2762eaa4be34a3a", kill_on_drop: false }`
[INFO] [stdout] 78a8aad153117f89472a33e37c17db7b4f4d62ada06f940de2762eaa4be34a3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+063c08dd8db6ff113bb809c130456f1781abe72c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ed1beb37cd7142195826d433f9d418dc5250c312379f8d586b3f58c439b1bbf
[INFO] running `Command { std: "docker" "start" "-a" "6ed1beb37cd7142195826d433f9d418dc5250c312379f8d586b3f58c439b1bbf", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling syn v1.0.104
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling serde v1.0.148
[INFO] [stderr]     Checking either v1.8.0
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling serde_json v1.0.89
[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]     Checking ciborium-io v0.2.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking itoa v1.0.4
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]     Checking os_str_bytes v6.4.1
[INFO] [stderr]     Checking half v1.8.2
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/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] 
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking plotters-svg v0.3.3
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[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 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6ed1beb37cd7142195826d433f9d418dc5250c312379f8d586b3f58c439b1bbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ed1beb37cd7142195826d433f9d418dc5250c312379f8d586b3f58c439b1bbf", kill_on_drop: false }`
[INFO] [stdout] 6ed1beb37cd7142195826d433f9d418dc5250c312379f8d586b3f58c439b1bbf