[INFO] fetching crate mio-byte-fifo 0.1.3...
[INFO] testing mio-byte-fifo-0.1.3 against try#16fbf98f22730e073c09e7b03f0eafb87a295545 for pr-145628
[INFO] extracting crate mio-byte-fifo 0.1.3 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mio-byte-fifo 0.1.3
[INFO] finished tweaking crates.io crate mio-byte-fifo 0.1.3
[INFO] tweaked toml for crates.io crate mio-byte-fifo 0.1.3 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mio-byte-fifo 0.1.3 on toolchain 16fbf98f22730e073c09e7b03f0eafb87a295545
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "generate-lockfile" "--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]      Locking 22 packages to latest compatible versions
[INFO] [stderr]       Adding mio v0.6.23 (available: v1.0.4)
[INFO] [stderr]       Adding ringbuf v0.1.9 (available: v0.4.8)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5bf926cdfa24a8a7f7d1efcb575ebe7f3deae5a6b5bd6009c8986a8b024afaf
[INFO] running `Command { std: "docker" "start" "-a" "d5bf926cdfa24a8a7f7d1efcb575ebe7f3deae5a6b5bd6009c8986a8b024afaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5bf926cdfa24a8a7f7d1efcb575ebe7f3deae5a6b5bd6009c8986a8b024afaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5bf926cdfa24a8a7f7d1efcb575ebe7f3deae5a6b5bd6009c8986a8b024afaf", kill_on_drop: false }`
[INFO] [stdout] d5bf926cdfa24a8a7f7d1efcb575ebe7f3deae5a6b5bd6009c8986a8b024afaf
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+16fbf98f22730e073c09e7b03f0eafb87a295545" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ff0b106e3217e1484af4f9c6a560cac371c34f57b84c0098b56c9c42c7f80d3
[INFO] running `Command { std: "docker" "start" "-a" "0ff0b106e3217e1484af4f9c6a560cac371c34f57b84c0098b56c9c42c7f80d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling slab v0.4.11
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling ringbuf v0.1.9
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.39
[INFO] [stderr] error: could not compile `iovec` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   could not execute process `/opt/rustwide/rustup-home/toolchains/16fbf98f22730e073c09e7b03f0eafb87a295545/bin/rustc --crate-name iovec --edition=2015 /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/iovec-0.1.4/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C embed-bitcode=no -C debuginfo=2 --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values())' -C metadata=0a7faee6f919edbe -C extra-filename=-fd9b93e26fd19dc6 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern libc=/opt/rustwide/target/debug/deps/liblibc-a58beeab2e1413cc.rmeta --cap-lints allow --cap-lints=forbid` (never executed)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   No such file or directory (os error 2)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0ff0b106e3217e1484af4f9c6a560cac371c34f57b84c0098b56c9c42c7f80d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ff0b106e3217e1484af4f9c6a560cac371c34f57b84c0098b56c9c42c7f80d3", kill_on_drop: false }`
[INFO] [stdout] 0ff0b106e3217e1484af4f9c6a560cac371c34f57b84c0098b56c9c42c7f80d3