[INFO] fetching crate qrs 0.1.1...
[INFO] checking qrs-0.1.1 against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] extracting crate qrs 0.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate qrs 0.1.1 on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate qrs 0.1.1
[INFO] finished tweaking crates.io crate qrs 0.1.1
[INFO] tweaked toml for crates.io crate qrs 0.1.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded qrcode v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48a69d68a69b7e6b576217c1021afc26a2737ae8e47e705179b36b7533ef4c07
[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" "48a69d68a69b7e6b576217c1021afc26a2737ae8e47e705179b36b7533ef4c07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48a69d68a69b7e6b576217c1021afc26a2737ae8e47e705179b36b7533ef4c07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48a69d68a69b7e6b576217c1021afc26a2737ae8e47e705179b36b7533ef4c07", kill_on_drop: false }`
[INFO] [stdout] 48a69d68a69b7e6b576217c1021afc26a2737ae8e47e705179b36b7533ef4c07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a942835707fa0092f39f2fb6974fcb5d02d73ed6da73b9856a7879273be8653
[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" "4a942835707fa0092f39f2fb6974fcb5d02d73ed6da73b9856a7879273be8653", 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]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling tinyvec v0.3.3
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling percent-encoding v1.0.1
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking adler32 v1.1.0
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]    Compiling traitobject v0.1.0
[INFO] [stderr]    Compiling language-tags v0.2.2
[INFO] [stderr]     Checking inflate v0.1.1
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking color_quant v1.0.1
[INFO] [stderr]    Compiling typeable v0.1.2
[INFO] [stderr]     Checking object v0.20.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking pest v0.3.3
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling state v0.2.2
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling rocket_codegen v0.2.11
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking get_if_addrs v0.4.1
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling unicode-normalization v0.1.13
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]     Checking rocket v0.2.11
[INFO] [stdout] error[E0432]: unresolved import `std::net::lookup_host`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rocket-0.2.11/src/config/config.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::{IpAddr, lookup_host};
[INFO] [stdout]   |                        ^^^^^^^^^^^ no `lookup_host` in `net`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rocket-0.2.11/src/http/header.rs:480:47
[INFO] [stdout]     |
[INFO] [stdout] 480 |                 Header::new(key.as_str(), val.borrow())
[INFO] [stdout]     |                                               ^^^^^^ cannot infer type for enum `std::borrow::Cow<'_, str>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `std::borrow::Cow<'_, str>: std::borrow::Borrow<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]     Checking rayon-core v1.7.1
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0283, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rocket`.
[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" "4a942835707fa0092f39f2fb6974fcb5d02d73ed6da73b9856a7879273be8653", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a942835707fa0092f39f2fb6974fcb5d02d73ed6da73b9856a7879273be8653", kill_on_drop: false }`
[INFO] [stdout] 4a942835707fa0092f39f2fb6974fcb5d02d73ed6da73b9856a7879273be8653