[INFO] fetching crate durationfmt 0.1.1...
[INFO] testing durationfmt-0.1.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate durationfmt 0.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate durationfmt 0.1.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate durationfmt 0.1.1
[INFO] finished tweaking crates.io crate durationfmt 0.1.1
[INFO] tweaked toml for crates.io crate durationfmt 0.1.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e482de4159ff4ccb2f60f25ac9c549ea7234ed4104fc14ffda5b7d75da25e62
[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" "0e482de4159ff4ccb2f60f25ac9c549ea7234ed4104fc14ffda5b7d75da25e62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e482de4159ff4ccb2f60f25ac9c549ea7234ed4104fc14ffda5b7d75da25e62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e482de4159ff4ccb2f60f25ac9c549ea7234ed4104fc14ffda5b7d75da25e62", kill_on_drop: false }`
[INFO] [stdout] 0e482de4159ff4ccb2f60f25ac9c549ea7234ed4104fc14ffda5b7d75da25e62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 351c2c1aee3497b5af7c82950b6024ebae0b4c3c53a210bb197ffc2effebd011
[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" "351c2c1aee3497b5af7c82950b6024ebae0b4c3c53a210bb197ffc2effebd011", kill_on_drop: false }`
[INFO] [stderr]    Compiling durationfmt v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `prec` is never read
[INFO] [stdout]   --> src/lib.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut prec = 0;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "351c2c1aee3497b5af7c82950b6024ebae0b4c3c53a210bb197ffc2effebd011", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "351c2c1aee3497b5af7c82950b6024ebae0b4c3c53a210bb197ffc2effebd011", kill_on_drop: false }`
[INFO] [stdout] 351c2c1aee3497b5af7c82950b6024ebae0b4c3c53a210bb197ffc2effebd011
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7cc0ff7c887f6d7f1587208d132b1cd57e67d8f3e18fc5bc99376c167a34836d
[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" "7cc0ff7c887f6d7f1587208d132b1cd57e67d8f3e18fc5bc99376c167a34836d", kill_on_drop: false }`
[INFO] [stdout] warning: value assigned to `prec` is never read
[INFO] [stdout]   --> src/lib.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut prec = 0;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling durationfmt v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `prec` is never read
[INFO] [stdout]   --> src/lib.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let mut prec = 0;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `Command { std: "docker" "inspect" "7cc0ff7c887f6d7f1587208d132b1cd57e67d8f3e18fc5bc99376c167a34836d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cc0ff7c887f6d7f1587208d132b1cd57e67d8f3e18fc5bc99376c167a34836d", kill_on_drop: false }`
[INFO] [stdout] 7cc0ff7c887f6d7f1587208d132b1cd57e67d8f3e18fc5bc99376c167a34836d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6a6a1b43e51b3fb14a1ba721adc0136e0925afac2155fe3679b8929f4cdb4c2a
[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" "6a6a1b43e51b3fb14a1ba721adc0136e0925afac2155fe3679b8929f4cdb4c2a", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `prec` is never read
[INFO] [stderr]   --> src/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut prec = 0;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `prec` is never read
[INFO] [stderr]   --> src/lib.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let mut prec = 0;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/durationfmt-bfa0440a2028c403
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::test_to_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests durationfmt
[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" "6a6a1b43e51b3fb14a1ba721adc0136e0925afac2155fe3679b8929f4cdb4c2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a6a1b43e51b3fb14a1ba721adc0136e0925afac2155fe3679b8929f4cdb4c2a", kill_on_drop: false }`
[INFO] [stdout] 6a6a1b43e51b3fb14a1ba721adc0136e0925afac2155fe3679b8929f4cdb4c2a