[INFO] updating cached repository https://github.com/tedgkassen/rust-slackbot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e534fc25874e972c4bb2a8c41774a7f1e896208
[INFO] checking tedgkassen/rust-slackbot against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftedgkassen%2Frust-slackbot" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tedgkassen/rust-slackbot 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 git repo https://github.com/tedgkassen/rust-slackbot
[INFO] finished tweaking git repo https://github.com/tedgkassen/rust-slackbot
[INFO] tweaked toml for git repo https://github.com/tedgkassen/rust-slackbot written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/tedgkassen/rust-slackbot already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] bd5b75838e38785cbe129a9a602c363b03c87d50d1d4003b2a5cf4087feac6aa
[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" "bd5b75838e38785cbe129a9a602c363b03c87d50d1d4003b2a5cf4087feac6aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd5b75838e38785cbe129a9a602c363b03c87d50d1d4003b2a5cf4087feac6aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd5b75838e38785cbe129a9a602c363b03c87d50d1d4003b2a5cf4087feac6aa", kill_on_drop: false }`
[INFO] [stdout] bd5b75838e38785cbe129a9a602c363b03c87d50d1d4003b2a5cf4087feac6aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ede5aba7b68bf387481979597b64cd3dc168cf1e402c4c412b52a2d0e2e62900
[INFO] running `Command { std: "docker" "start" "-a" "ede5aba7b68bf387481979597b64cd3dc168cf1e402c4c412b52a2d0e2e62900", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.5
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[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling serde v1.0.79
[INFO] [stderr]    Compiling openssl v0.10.12
[INFO] [stderr]    Compiling build_const v0.2.1
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[INFO] [stderr]     Checking indexmap v1.0.1
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[INFO] [stderr]    Compiling encoding_rs v0.8.10
[INFO] [stderr]     Checking adler32 v1.0.3
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[INFO] [stderr]     Checking ucd-util v0.1.1
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[INFO] [stderr]    Compiling serde_derive v1.0.79
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[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/standardmessagedispatcher.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |     handlers: Vec<Box<StandardMessageHandler>>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StandardMessageHandler`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/standardmessagedispatcher.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut rs: Vec<Box<StandardMessageHandler>> = Vec::new();
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StandardMessageHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/standardmessagedispatcher.rs:14:23
[INFO] [stdout]    |
[INFO] [stdout] 14 |     handlers: Vec<Box<StandardMessageHandler>>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StandardMessageHandler`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/standardmessagedispatcher.rs:19:29
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let mut rs: Vec<Box<StandardMessageHandler>> = Vec::new();
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn StandardMessageHandler`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 30s
[INFO] running `Command { std: "docker" "inspect" "ede5aba7b68bf387481979597b64cd3dc168cf1e402c4c412b52a2d0e2e62900", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ede5aba7b68bf387481979597b64cd3dc168cf1e402c4c412b52a2d0e2e62900", kill_on_drop: false }`
[INFO] [stdout] ede5aba7b68bf387481979597b64cd3dc168cf1e402c4c412b52a2d0e2e62900