[INFO] cloning repository https://github.com/thelonehegelian/image_thumbnail_generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/thelonehegelian/image_thumbnail_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthelonehegelian%2Fimage_thumbnail_generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthelonehegelian%2Fimage_thumbnail_generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e8ee7204696aed282791e260ebfb88b561f65f63
[INFO] testing thelonehegelian/image_thumbnail_generator against master#61223975d46f794466efa832bc7562b9707ecc46+rustflags=-Copt-level=3 for pr-121282
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthelonehegelian%2Fimage_thumbnail_generator" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thelonehegelian/image_thumbnail_generator on toolchain 61223975d46f794466efa832bc7562b9707ecc46
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+61223975d46f794466efa832bc7562b9707ecc46" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thelonehegelian/image_thumbnail_generator
[INFO] finished tweaking git repo https://github.com/thelonehegelian/image_thumbnail_generator
[INFO] tweaked toml for git repo https://github.com/thelonehegelian/image_thumbnail_generator written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/thelonehegelian/image_thumbnail_generator 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" "+61223975d46f794466efa832bc7562b9707ecc46" "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] testing thelonehegelian/image_thumbnail_generator against try#d073071d77ce0f93b4fd8cc567a1e2b9e1b22126+rustflags=-Copt-level=3 for pr-121282
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthelonehegelian%2Fimage_thumbnail_generator" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thelonehegelian/image_thumbnail_generator on toolchain d073071d77ce0f93b4fd8cc567a1e2b9e1b22126
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thelonehegelian/image_thumbnail_generator
[INFO] finished tweaking git repo https://github.com/thelonehegelian/image_thumbnail_generator
[INFO] tweaked toml for git repo https://github.com/thelonehegelian/image_thumbnail_generator written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/thelonehegelian/image_thumbnail_generator 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" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "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
[ERROR] error running command: no output for 300 seconds
[INFO] testing thelonehegelian/image_thumbnail_generator against try#d073071d77ce0f93b4fd8cc567a1e2b9e1b22126+rustflags=-Copt-level=3 for pr-121282
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthelonehegelian%2Fimage_thumbnail_generator" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/thelonehegelian/image_thumbnail_generator on toolchain d073071d77ce0f93b4fd8cc567a1e2b9e1b22126
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/thelonehegelian/image_thumbnail_generator
[INFO] finished tweaking git repo https://github.com/thelonehegelian/image_thumbnail_generator
[INFO] tweaked toml for git repo https://github.com/thelonehegelian/image_thumbnail_generator written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/thelonehegelian/image_thumbnail_generator 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" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded half v2.2.0
[INFO] [stderr]   Downloaded spin v0.9.4
[INFO] [stderr]   Downloaded flume v0.10.14
[INFO] [stderr]   Downloaded exr v1.5.2
[INFO] [stderr]   Downloaded object v0.30.1
[INFO] [stderr]   Downloaded gimli v0.27.0
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9fa8361c1b3922d3106aa45acd7eaba77527bddea60d54f9ab797cc38d68c2f2
[INFO] running `Command { std: "docker" "start" "-a" "9fa8361c1b3922d3106aa45acd7eaba77527bddea60d54f9ab797cc38d68c2f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9fa8361c1b3922d3106aa45acd7eaba77527bddea60d54f9ab797cc38d68c2f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fa8361c1b3922d3106aa45acd7eaba77527bddea60d54f9ab797cc38d68c2f2", kill_on_drop: false }`
[INFO] [stdout] 9fa8361c1b3922d3106aa45acd7eaba77527bddea60d54f9ab797cc38d68c2f2
[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 -Copt-level=3" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d073071d77ce0f93b4fd8cc567a1e2b9e1b22126" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f4f511d07cf2facd92d94ec34e8125a98f71a16cc762b6e7f52d0349eb15497
[INFO] running `Command { std: "docker" "start" "-a" "0f4f511d07cf2facd92d94ec34e8125a98f71a16cc762b6e7f52d0349eb15497", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling crossbeam-utils v0.8.14
[INFO] [stderr]    Compiling memoffset v0.7.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.49
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.13
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.6
[INFO] [stderr]    Compiling syn v1.0.107
[INFO] [stderr]    Compiling rayon-core v1.10.1
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling futures-core v0.3.25
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling miniz_oxide v0.6.2
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling either v1.8.0
[INFO] [stderr]    Compiling cc v1.0.78
[INFO] [stderr]    Compiling spin v0.9.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling futures-sink v0.3.25
[INFO] [stderr]    Compiling gimli v0.27.0
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling half v2.2.0
[INFO] [stderr]    Compiling color_quant v1.1.0
[INFO] [stderr]    Compiling lebe v0.5.2
[INFO] [stderr]    Compiling flate2 v1.0.25
[INFO] [stderr]    Compiling bit_field v0.10.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling gif v0.11.4
[INFO] [stderr]    Compiling bytemuck v1.12.3
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-1.0.49/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling crossbeam-channel v0.5.6
[INFO] [stderr]    Compiling object v0.30.1
[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" "0f4f511d07cf2facd92d94ec34e8125a98f71a16cc762b6e7f52d0349eb15497", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f4f511d07cf2facd92d94ec34e8125a98f71a16cc762b6e7f52d0349eb15497", kill_on_drop: false }`
[INFO] [stdout] 0f4f511d07cf2facd92d94ec34e8125a98f71a16cc762b6e7f52d0349eb15497