[INFO] cloning repository https://github.com/koivunej/readpcap
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/koivunej/readpcap" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoivunej%2Freadpcap", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoivunej%2Freadpcap'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] aafc6d9e031a62cbf7ee9ef297d655e65c1d6e74
[INFO] testing koivunej/readpcap against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkoivunej%2Freadpcap" "/workspace/builds/worker-105/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-105/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/koivunej/readpcap on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/koivunej/readpcap
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/koivunej/readpcap
[INFO] tweaked toml for git repo https://github.com/koivunej/readpcap written to /workspace/builds/worker-105/source/Cargo.toml
[INFO] crate git repo https://github.com/koivunej/readpcap already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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 uuid v0.2.3
[INFO] [stderr]   Downloaded gcc v0.3.49
[INFO] [stderr]   Downloaded backtrace-sys v0.1.11
[INFO] [stderr]   Downloaded derive_more v0.6.2
[INFO] [stderr]   Downloaded quick-protobuf v0.5.0
[INFO] [stderr]   Downloaded tokio-core v0.1.7
[INFO] [stderr]   Downloaded libc v0.2.23
[INFO] [stderr]   Downloaded futures v0.1.13
[INFO] [stderr]   Downloaded tokio-io v0.1.1
[INFO] [stderr]   Downloaded derive-into-owned v0.1.0
[INFO] [stderr]   Downloaded mio v0.6.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3457d92e754b9054bf6fc4ca1ed6880722e2b20764823b8dd8f23c5479fba4d2
[INFO] running `Command { std: "docker" "start" "-a" "3457d92e754b9054bf6fc4ca1ed6880722e2b20764823b8dd8f23c5479fba4d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3457d92e754b9054bf6fc4ca1ed6880722e2b20764823b8dd8f23c5479fba4d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3457d92e754b9054bf6fc4ca1ed6880722e2b20764823b8dd8f23c5479fba4d2", kill_on_drop: false }`
[INFO] [stdout] 3457d92e754b9054bf6fc4ca1ed6880722e2b20764823b8dd8f23c5479fba4d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d97060643e8982c33826d878d14eaf8156dd4cba0706d9f69ea52b20cec88f82
[INFO] running `Command { std: "docker" "start" "-a" "d97060643e8982c33826d878d14eaf8156dd4cba0706d9f69ea52b20cec88f82", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.23
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling futures v0.1.13
[INFO] [stderr]    Compiling log v0.3.7
[INFO] [stderr]    Compiling iovec v0.1.0
[INFO] [stderr]    Compiling bytes v0.4.3
[INFO] [stderr]    Compiling tokio-io v0.1.1
[INFO] [stderr]    Compiling readpcap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/tcp/connection.rs:293:40
[INFO] [stdout]     |
[INFO] [stdout] 293 |                 self.format_ascii(fmt, (count - group_len * groups_per_line), count)?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/tcp/connection.rs:322:36
[INFO] [stdout]     |
[INFO] [stdout] 322 |             self.format_ascii(fmt, (count - (count % bytes_per_line)), count)?;
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.36s
[INFO] running `Command { std: "docker" "inspect" "d97060643e8982c33826d878d14eaf8156dd4cba0706d9f69ea52b20cec88f82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d97060643e8982c33826d878d14eaf8156dd4cba0706d9f69ea52b20cec88f82", kill_on_drop: false }`
[INFO] [stdout] d97060643e8982c33826d878d14eaf8156dd4cba0706d9f69ea52b20cec88f82
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-105/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 168b69b2daeb36a1b09d9cdc4e521a13c800578b1bc60e7e31c946964478ee32
[INFO] running `Command { std: "docker" "start" "-a" "168b69b2daeb36a1b09d9cdc4e521a13c800578b1bc60e7e31c946964478ee32", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling gcc v0.3.49
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling lazycell v0.4.0
[INFO] [stderr]    Compiling slab v0.3.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.4
[INFO] [stderr]    Compiling scoped-tls v0.1.0
[INFO] [stderr]    Compiling smallvec v0.2.1
[INFO] [stderr]    Compiling take v0.1.0
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/tcp/connection.rs:293:40
[INFO] [stdout]     |
[INFO] [stdout] 293 |                 self.format_ascii(fmt, (count - group_len * groups_per_line), count)?;
[INFO] [stdout]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/tcp/connection.rs:322:36
[INFO] [stdout]     |
[INFO] [stdout] 322 |             self.format_ascii(fmt, (count - (count % bytes_per_line)), count)?;
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling net2 v0.2.29
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling uuid v0.2.3
[INFO] [stderr]    Compiling mio v0.6.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.11
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling tokio-core v0.1.7
[INFO] [stderr]    Compiling tokio-proto v0.1.1 (https://github.com/koivunej/tokio-proto.git?branch=generic-requestid#15312a57)
[INFO] [stderr]    Compiling derive-into-owned v0.1.0
[INFO] [stderr]    Compiling derive_more v0.6.2
[INFO] [stderr]    Compiling backtrace v0.3.2
[INFO] [stderr]    Compiling error-chain v0.8.1
[INFO] [stderr]    Compiling quick-protobuf v0.5.0
[INFO] [stderr]    Compiling eventstore-tcp v0.2.0 (https://github.com/koivunej/eventstore-tcp.git#447d86b9)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/eventstore-tcp-4efe7b067b1df611/447d86b/src/lib.rs:82:1
[INFO] [stdout]    |
[INFO] [stdout] 82 | #![feature(try_from)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `eventstore-tcp` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "168b69b2daeb36a1b09d9cdc4e521a13c800578b1bc60e7e31c946964478ee32", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "168b69b2daeb36a1b09d9cdc4e521a13c800578b1bc60e7e31c946964478ee32", kill_on_drop: false }`
[INFO] [stdout] 168b69b2daeb36a1b09d9cdc4e521a13c800578b1bc60e7e31c946964478ee32