[INFO] fetching crate tello 0.3.0...
[INFO] testing tello-0.3.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate tello 0.3.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate tello 0.3.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tello 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate tello 0.3.0
[INFO] tweaked toml for crates.io crate tello 0.3.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate tello 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-integer v0.1.41
[INFO] [stderr]   Downloaded chrono v0.4.10
[INFO] [stderr]   Downloaded rand_jitter v0.1.4
[INFO] [stderr]   Downloaded rand_hc v0.1.0
[INFO] [stderr]   Downloaded rand_isaac v0.1.1
[INFO] [stderr]   Downloaded redox_syscall v0.1.56
[INFO] [stderr]   Downloaded time v0.1.42
[INFO] [stderr]   Downloaded byteorder v1.3.2
[INFO] [stderr]   Downloaded rand_os v0.1.3
[INFO] [stderr]   Downloaded num-iter v0.1.39
[INFO] [stderr]   Downloaded num-traits v0.2.10
[INFO] [stderr]   Downloaded rand v0.6.5
[INFO] [stderr]   Downloaded rand_chacha v0.1.1
[INFO] [stderr]   Downloaded rand_pcg v0.1.2
[INFO] [stderr]   Downloaded autocfg v0.1.7
[INFO] [stderr]   Downloaded sdl2-sys v0.32.6
[INFO] [stderr]   Downloaded winapi v0.3.8
[INFO] [stderr]   Downloaded libc v0.2.66
[INFO] [stderr]   Downloaded sdl2 v0.32.2
[INFO] [stderr]   Downloaded rand_xorshift v0.1.1
[INFO] [stderr]   Downloaded cloudabi v0.0.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 159e633de90ccd19e280df198c4636a54b585ecf282f00e622606a2a2f3549ae
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "159e633de90ccd19e280df198c4636a54b585ecf282f00e622606a2a2f3549ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "159e633de90ccd19e280df198c4636a54b585ecf282f00e622606a2a2f3549ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "159e633de90ccd19e280df198c4636a54b585ecf282f00e622606a2a2f3549ae", kill_on_drop: false }`
[INFO] [stdout] 159e633de90ccd19e280df198c4636a54b585ecf282f00e622606a2a2f3549ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 19bae5683220b651af4fc256f370807dce4623072f33b8ff9a102adacc634e69
[INFO] running `Command { std: "docker" "start" "-a" "19bae5683220b651af4fc256f370807dce4623072f33b8ff9a102adacc634e69", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling chrono v0.4.10
[INFO] [stderr]    Compiling tello v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.58s
[INFO] running `Command { std: "docker" "inspect" "19bae5683220b651af4fc256f370807dce4623072f33b8ff9a102adacc634e69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19bae5683220b651af4fc256f370807dce4623072f33b8ff9a102adacc634e69", kill_on_drop: false }`
[INFO] [stdout] 19bae5683220b651af4fc256f370807dce4623072f33b8ff9a102adacc634e69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c4b47b6c3cbce5ef26aed70a064a49be81f8a096d1e5eb5dc1ef81b16c09e82
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9c4b47b6c3cbce5ef26aed70a064a49be81f8a096d1e5eb5dc1ef81b16c09e82", kill_on_drop: false }`
[INFO] [stderr]    Compiling sdl2 v0.32.2
[INFO] [stderr]    Compiling sdl2-sys v0.32.6
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling tello v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `SocketAddr`, `UdpSocket`
[INFO] [stdout]  --> examples/fly/main.rs:8:16
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::net::{SocketAddr, UdpSocket};
[INFO] [stdout]   |                ^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.0.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.1.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.10.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.11.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.12.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.13.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.14.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.15.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.2.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.3.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.4.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.5.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.6.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.7.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.8.rcgu.o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.fly.72s4yjxw-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116" "/opt/rustwide/target/debug/examples/fly-d5bbb0d348dcf116.19wxnbf1p1y2ecbp.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libtello-abe8df4ed409eb96.rlib" "/opt/rustwide/target/debug/deps/libchrono-19233926aed73187.rlib" "/opt/rustwide/target/debug/deps/libtime-b94386afebabcb28.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-d9d0103afea89763.rlib" "/opt/rustwide/target/debug/deps/libsdl2-18e11e915bfa2563.rlib" "/opt/rustwide/target/debug/deps/librand-0b158d90d4c2a261.rlib" "/opt/rustwide/target/debug/deps/librand_xorshift-cf5755674f76ffe9.rlib" "/opt/rustwide/target/debug/deps/librand_pcg-948df8149c85e143.rlib" "/opt/rustwide/target/debug/deps/librand_hc-6cb7a57c36a79f7e.rlib" "/opt/rustwide/target/debug/deps/librand_chacha-c50ac4d58a434c2a.rlib" "/opt/rustwide/target/debug/deps/librand_isaac-4982dbfb08331eec.rlib" "/opt/rustwide/target/debug/deps/librand_core-b1006ca5a808ba0e.rlib" "/opt/rustwide/target/debug/deps/librand_os-73f80ebaee11e747.rlib" "/opt/rustwide/target/debug/deps/librand_jitter-84f4ba80f08b5115.rlib" "/opt/rustwide/target/debug/deps/librand_core-e8ac9a7347391b37.rlib" "/opt/rustwide/target/debug/deps/libsdl2_sys-0063f6acd37699d2.rlib" "/opt/rustwide/target/debug/deps/libbitflags-8a5476fab5bb3232.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-b2d06f7d60fcbb27.rlib" "/opt/rustwide/target/debug/deps/liblibc-0bfe2d51e9fc3209.rlib" "/opt/rustwide/target/debug/deps/libnum-9beb809269951914.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-b8656278f42a2f60.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-84b1237b1e9857db.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-c36fc41026466506.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-7444fd17919e9af0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-0ee2f67026959ab7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-df1bcd1e82256d04.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-ed9ecf1b54021131.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0ede66bb24e94b96.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-7c2de7f50940865c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-b138d50085fd4683.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-6576870d8f2b9ae2.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-042a30c5f67b2c91.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7b3f33d3dbe385dc.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-90b3063cd7b22527.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-17f9484f8dc4da1e.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-df38345acd9d92e1.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a5e10ca10bdd9e54.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9e5b4162eeef2cef.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-3a4e739a77468800.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-0f3a0c116d5e04d6.rlib" "-Wl,-Bdynamic" "-lSDL2" "-lSDL2_ttf" "-lutil" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lSDL2_ttf
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tello`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "9c4b47b6c3cbce5ef26aed70a064a49be81f8a096d1e5eb5dc1ef81b16c09e82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c4b47b6c3cbce5ef26aed70a064a49be81f8a096d1e5eb5dc1ef81b16c09e82", kill_on_drop: false }`
[INFO] [stdout] 9c4b47b6c3cbce5ef26aed70a064a49be81f8a096d1e5eb5dc1ef81b16c09e82