[INFO] updating cached repository https://github.com/nicofff/topsort
[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] f498230bd9b4e178a698d8a5e0458e32140ac468
[INFO] testing nicofff/topsort against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicofff%2Ftopsort" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nicofff/topsort on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nicofff/topsort
[INFO] finished tweaking git repo https://github.com/nicofff/topsort
[INFO] tweaked toml for git repo https://github.com/nicofff/topsort written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/nicofff/topsort already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a0081d6ec9cc27e84f5dfebfd6047c96975319132b697183ad70b40b66bb325
[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" "9a0081d6ec9cc27e84f5dfebfd6047c96975319132b697183ad70b40b66bb325", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a0081d6ec9cc27e84f5dfebfd6047c96975319132b697183ad70b40b66bb325", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a0081d6ec9cc27e84f5dfebfd6047c96975319132b697183ad70b40b66bb325", kill_on_drop: false }`
[INFO] [stdout] 9a0081d6ec9cc27e84f5dfebfd6047c96975319132b697183ad70b40b66bb325
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b8cf7be7bd6bb5d7a94eeffc062e6ce6398cb3a4e16a18d854ed96e9d2608ae
[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" "1b8cf7be7bd6bb5d7a94eeffc062e6ce6398cb3a4e16a18d854ed96e9d2608ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling topsort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/topsort/multi_btreemap.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get(&self, k: &K) -> Option<&Vec<String>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut`
[INFO] [stdout]   --> src/topsort/multi_btreemap.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn get_mut(&mut self, k: &K) -> Option<&mut Vec<String>> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.84s
[INFO] running `Command { std: "docker" "inspect" "1b8cf7be7bd6bb5d7a94eeffc062e6ce6398cb3a4e16a18d854ed96e9d2608ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b8cf7be7bd6bb5d7a94eeffc062e6ce6398cb3a4e16a18d854ed96e9d2608ae", kill_on_drop: false }`
[INFO] [stdout] 1b8cf7be7bd6bb5d7a94eeffc062e6ce6398cb3a4e16a18d854ed96e9d2608ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 520ffb8fcef60cf3948c5098f981a960243dcd6205b597bb0a8d90f194278d7b
[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" "520ffb8fcef60cf3948c5098f981a960243dcd6205b597bb0a8d90f194278d7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling topsort v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]   --> src/topsort/multi_btreemap.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get(&self, k: &K) -> Option<&Vec<String>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut`
[INFO] [stdout]   --> src/topsort/multi_btreemap.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn get_mut(&mut self, k: &K) -> Option<&mut Vec<String>> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "520ffb8fcef60cf3948c5098f981a960243dcd6205b597bb0a8d90f194278d7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "520ffb8fcef60cf3948c5098f981a960243dcd6205b597bb0a8d90f194278d7b", kill_on_drop: false }`
[INFO] [stdout] 520ffb8fcef60cf3948c5098f981a960243dcd6205b597bb0a8d90f194278d7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", 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] 36d28cc1d39527c1c1b96320eff72c9f60dfdf372277176838cff524e01e2144
[INFO] running `Command { std: "docker" "start" "-a" "36d28cc1d39527c1c1b96320eff72c9f60dfdf372277176838cff524e01e2144", kill_on_drop: false }`
[INFO] [stderr] warning: associated function is never used: `get`
[INFO] [stderr]   --> src/topsort/multi_btreemap.rs:33:12
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn get(&self, k: &K) -> Option<&Vec<String>> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_mut`
[INFO] [stderr]   --> src/topsort/multi_btreemap.rs:53:12
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn get_mut(&mut self, k: &K) -> Option<&mut Vec<String>> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/topsort-b3ac22a44c1ad160
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "36d28cc1d39527c1c1b96320eff72c9f60dfdf372277176838cff524e01e2144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36d28cc1d39527c1c1b96320eff72c9f60dfdf372277176838cff524e01e2144", kill_on_drop: false }`
[INFO] [stdout] 36d28cc1d39527c1c1b96320eff72c9f60dfdf372277176838cff524e01e2144