[INFO] cloning repository https://github.com/RadicalZephyr/rust-tftp
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RadicalZephyr/rust-tftp" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRadicalZephyr%2Frust-tftp", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRadicalZephyr%2Frust-tftp'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3dd90b77d742bc6db997e2c702362baefa98419f
[INFO] testing RadicalZephyr/rust-tftp against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRadicalZephyr%2Frust-tftp" "/workspace/builds/worker-57/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-57/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RadicalZephyr/rust-tftp on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RadicalZephyr/rust-tftp
[INFO] finished tweaking git repo https://github.com/RadicalZephyr/rust-tftp
[INFO] tweaked toml for git repo https://github.com/RadicalZephyr/rust-tftp written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate git repo https://github.com/RadicalZephyr/rust-tftp already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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 tokio-async-await v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1565c5bfceff2d73f277f5e2090589e401cece7d8040cad7020c99fbaaa4523
[INFO] running `Command { std: "docker" "start" "-a" "f1565c5bfceff2d73f277f5e2090589e401cece7d8040cad7020c99fbaaa4523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1565c5bfceff2d73f277f5e2090589e401cece7d8040cad7020c99fbaaa4523", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1565c5bfceff2d73f277f5e2090589e401cece7d8040cad7020c99fbaaa4523", kill_on_drop: false }`
[INFO] [stdout] f1565c5bfceff2d73f277f5e2090589e401cece7d8040cad7020c99fbaaa4523
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dce0ea5f0cb61a40fb4fdccc98e05153ba6a0ab5b43ce93c8c663fba90deb36e
[INFO] running `Command { std: "docker" "start" "-a" "dce0ea5f0cb61a40fb4fdccc98e05153ba6a0ab5b43ce93c8c663fba90deb36e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling cfg-if v0.1.5
[INFO] [stderr]    Compiling futures v0.1.24
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling scopeguard v0.3.3
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling rand_core v0.2.1
[INFO] [stderr]    Compiling crossbeam-utils v0.5.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling slab v0.4.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling lazycell v1.2.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling nodrop v0.1.12
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling log v0.4.5
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling owning_ref v0.3.3
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling lock_api v0.1.4
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling smallvec v0.6.5
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling bytes v0.4.10
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/futures-0.1.24/src/lib.rs:161:42
[INFO] [stdout]     |
[INFO] [stdout] 161 | #![cfg_attr(feature = "nightly", feature(pin))]
[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 `futures` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "dce0ea5f0cb61a40fb4fdccc98e05153ba6a0ab5b43ce93c8c663fba90deb36e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dce0ea5f0cb61a40fb4fdccc98e05153ba6a0ab5b43ce93c8c663fba90deb36e", kill_on_drop: false }`
[INFO] [stdout] dce0ea5f0cb61a40fb4fdccc98e05153ba6a0ab5b43ce93c8c663fba90deb36e