[INFO] cloning repository https://github.com/jbsx/tcp_stack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jbsx/tcp_stack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbsx%2Ftcp_stack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbsx%2Ftcp_stack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 38ea780ec521455e80ce492048292d2561ae1313
[INFO] checking jbsx/tcp_stack against try#9053a8ad740a9e131b53ea98acecf68cf79134fe for pr-137045
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjbsx%2Ftcp_stack" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jbsx/tcp_stack on toolchain 9053a8ad740a9e131b53ea98acecf68cf79134fe
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9053a8ad740a9e131b53ea98acecf68cf79134fe" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jbsx/tcp_stack
[INFO] finished tweaking git repo https://github.com/jbsx/tcp_stack
[INFO] tweaked toml for git repo https://github.com/jbsx/tcp_stack written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jbsx/tcp_stack 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" "+9053a8ad740a9e131b53ea98acecf68cf79134fe" "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 etherparse v0.10.1
[INFO] [stderr]   Downloaded tun-tap v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9053a8ad740a9e131b53ea98acecf68cf79134fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c3bdd843176c5a210bd514a8e290129c710ad339e3fe7c133479d27a53c66f98
[INFO] running `Command { std: "docker" "start" "-a" "c3bdd843176c5a210bd514a8e290129c710ad339e3fe7c133479d27a53c66f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c3bdd843176c5a210bd514a8e290129c710ad339e3fe7c133479d27a53c66f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3bdd843176c5a210bd514a8e290129c710ad339e3fe7c133479d27a53c66f98", kill_on_drop: false }`
[INFO] [stdout] c3bdd843176c5a210bd514a8e290129c710ad339e3fe7c133479d27a53c66f98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+9053a8ad740a9e131b53ea98acecf68cf79134fe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 26ca47588396f46ecf3c2b103224bed9f85c0cd85a964d689820de4ac53179ba
[INFO] running `Command { std: "docker" "start" "-a" "26ca47588396f46ecf3c2b103224bed9f85c0cd85a964d689820de4ac53179ba", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking etherparse v0.10.1
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling tun-tap v0.1.2
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]     Checking tcp_stack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0599]: no method named `accept` found for enum `std::collections::hash_map::Entry` in the current scope
[INFO] [stdout]   --> src/main.rs:45:30
[INFO] [stdout]    |
[INFO] [stdout] 38 | /                         connections
[INFO] [stdout] 39 | |                             .entry(AddrQuad {
[INFO] [stdout] 40 | |                                 src: ip_header.source_addr(),
[INFO] [stdout] 41 | |                                 src_port: tcp_header.source_port(),
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |                             })
[INFO] [stdout] 45 | |                             .accept(&mut nic, tcp_header, ip_header, &buff[data_len..recv_len])?;
[INFO] [stdout]    | |                             -^^^^^^ method not found in `Entry<'_, AddrQuad, Connection>`
[INFO] [stdout]    | |_____________________________|
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tcp.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut ip = etherparse::Ipv4Header::new(
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tcp_stack` (bin "tcp_stack" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0599]: no method named `accept` found for enum `std::collections::hash_map::Entry` in the current scope
[INFO] [stdout]   --> src/main.rs:45:30
[INFO] [stdout]    |
[INFO] [stdout] 38 | /                         connections
[INFO] [stdout] 39 | |                             .entry(AddrQuad {
[INFO] [stdout] 40 | |                                 src: ip_header.source_addr(),
[INFO] [stdout] 41 | |                                 src_port: tcp_header.source_port(),
[INFO] [stdout] ...  |
[INFO] [stdout] 44 | |                             })
[INFO] [stdout] 45 | |                             .accept(&mut nic, tcp_header, ip_header, &buff[data_len..recv_len])?;
[INFO] [stdout]    | |                             -^^^^^^ method not found in `Entry<'_, AddrQuad, Connection>`
[INFO] [stdout]    | |_____________________________|
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/tcp.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut ip = etherparse::Ipv4Header::new(
[INFO] [stdout]    |             ----^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tcp_stack` (bin "tcp_stack") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "26ca47588396f46ecf3c2b103224bed9f85c0cd85a964d689820de4ac53179ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "26ca47588396f46ecf3c2b103224bed9f85c0cd85a964d689820de4ac53179ba", kill_on_drop: false }`
[INFO] [stdout] 26ca47588396f46ecf3c2b103224bed9f85c0cd85a964d689820de4ac53179ba