[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 master#4fb54ed484e2239a3e9eff3be17df00d2a162be3 for pr-73345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftedgkassen%2Frust-slackbot" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tedgkassen/rust-slackbot on toolchain 4fb54ed484e2239a3e9eff3be17df00d2a162be3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "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-3/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" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "metadata" "--no-deps" "--format-version=1", 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] 1b575ccb3790d90dfddbb1f0e30da5c59d1d03a5d290772355665370363dcbdc
[INFO] running `Command { std: "docker" "start" "-a" "1b575ccb3790d90dfddbb1f0e30da5c59d1d03a5d290772355665370363dcbdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b575ccb3790d90dfddbb1f0e30da5c59d1d03a5d290772355665370363dcbdc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b575ccb3790d90dfddbb1f0e30da5c59d1d03a5d290772355665370363dcbdc", kill_on_drop: false }`
[INFO] [stdout] 1b575ccb3790d90dfddbb1f0e30da5c59d1d03a5d290772355665370363dcbdc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+4fb54ed484e2239a3e9eff3be17df00d2a162be3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aba230e3c11c477daafe24ebbbfc6b659df7192f2c12dccb50cc14262d4f21de
[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" "aba230e3c11c477daafe24ebbbfc6b659df7192f2c12dccb50cc14262d4f21de", kill_on_drop: false }`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]     Checking cfg-if v0.1.5
[INFO] [stderr]     Checking rand_core v0.3.0
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[INFO] [stderr]    Compiling unicode-xid v0.1.0
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[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking siphasher v0.2.3
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[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]     Checking ucd-util v0.1.1
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[INFO] [stderr]     Checking subprocess v0.1.16
[INFO] [stderr]     Checking unreachable v1.0.0
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[INFO] [stderr]     Checking input_buffer v0.2.0
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[INFO] [stderr]    Compiling native-tls v0.2.1
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[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling phf_codegen v0.7.23
[INFO] [stderr]     Checking tokio-reactor v0.1.6
[INFO] [stderr]     Checking tokio-fs v0.1.3
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]     Checking tokio-uds v0.2.2
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking tokio-udp v0.1.2
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]     Checking tokio v0.1.11
[INFO] [stderr]     Checking hyper v0.12.11
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]     Checking tungstenite v0.6.0
[INFO] [stderr]     Checking hyper-tls v0.3.1
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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 46s
[INFO] running `Command { std: "docker" "inspect" "aba230e3c11c477daafe24ebbbfc6b659df7192f2c12dccb50cc14262d4f21de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aba230e3c11c477daafe24ebbbfc6b659df7192f2c12dccb50cc14262d4f21de", kill_on_drop: false }`
[INFO] [stdout] aba230e3c11c477daafe24ebbbfc6b659df7192f2c12dccb50cc14262d4f21de