[INFO] fetching crate fastid 0.3.3...
[INFO] testing fastid-0.3.3 against try#dec9417b8611e34e787a3e4c37686b5131f9e5c5 for pr-154210-1
[INFO] extracting crate fastid 0.3.3 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate fastid 0.3.3
[INFO] finished tweaking crates.io crate fastid 0.3.3
[INFO] tweaked toml for crates.io crate fastid 0.3.3 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fastid 0.3.3 on toolchain dec9417b8611e34e787a3e4c37686b5131f9e5c5
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 16 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.21.7 (available: v0.22.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d46b134a6479a9e469b52d7e6d9a5311672c4968ebda3c76a46b1bcdeac5c3c5
[INFO] running `Command { std: "docker" "start" "-a" "d46b134a6479a9e469b52d7e6d9a5311672c4968ebda3c76a46b1bcdeac5c3c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d46b134a6479a9e469b52d7e6d9a5311672c4968ebda3c76a46b1bcdeac5c3c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d46b134a6479a9e469b52d7e6d9a5311672c4968ebda3c76a46b1bcdeac5c3c5", kill_on_drop: false }`
[INFO] [stdout] d46b134a6479a9e469b52d7e6d9a5311672c4968ebda3c76a46b1bcdeac5c3c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56046a085dc9cef312dc5680be5107d5bd7a609cfc4ab87e5a256a6fcb6a8b83
[INFO] running `Command { std: "docker" "start" "-a" "56046a085dc9cef312dc5680be5107d5bd7a609cfc4ab87e5a256a6fcb6a8b83", kill_on_drop: false }`
[INFO] [stderr]    Compiling fastid v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `time_bits` is never read
[INFO] [stdout]   --> src/lib.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct FastIdWorker {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 51 |     time_bits: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FastIdWorker` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "56046a085dc9cef312dc5680be5107d5bd7a609cfc4ab87e5a256a6fcb6a8b83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56046a085dc9cef312dc5680be5107d5bd7a609cfc4ab87e5a256a6fcb6a8b83", kill_on_drop: false }`
[INFO] [stdout] 56046a085dc9cef312dc5680be5107d5bd7a609cfc4ab87e5a256a6fcb6a8b83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e035dab5fe9a6c1d7aabaf45bc2258a1dc19f86aee02ff57cfffb8a90ff8a60f
[INFO] running `Command { std: "docker" "start" "-a" "e035dab5fe9a6c1d7aabaf45bc2258a1dc19f86aee02ff57cfffb8a90ff8a60f", kill_on_drop: false }`
[INFO] [stdout] warning: field `time_bits` is never read
[INFO] [stdout]   --> src/lib.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct FastIdWorker {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 51 |     time_bits: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FastIdWorker` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling fastid v0.3.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let mut worker = FastIdWorker::new(u64::MAX);
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:212:13
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let mut worker = FastIdWorker::new(u64::MAX);
[INFO] [stdout]     |             ----^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `time_bits` is never read
[INFO] [stdout]   --> src/lib.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 50 | pub struct FastIdWorker {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] 51 |     time_bits: usize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FastIdWorker` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "e035dab5fe9a6c1d7aabaf45bc2258a1dc19f86aee02ff57cfffb8a90ff8a60f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e035dab5fe9a6c1d7aabaf45bc2258a1dc19f86aee02ff57cfffb8a90ff8a60f", kill_on_drop: false }`
[INFO] [stdout] e035dab5fe9a6c1d7aabaf45bc2258a1dc19f86aee02ff57cfffb8a90ff8a60f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+dec9417b8611e34e787a3e4c37686b5131f9e5c5" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 89b329f6d3d6c82410930d33b134548e0ac2523cf43a84df770d5a293c2befb5
[INFO] running `Command { std: "docker" "start" "-a" "89b329f6d3d6c82410930d33b134548e0ac2523cf43a84df770d5a293c2befb5", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr] warning: field `time_bits` is never read
[INFO] [stdout] test tests::can_generate_id ... ok
[INFO] [stderr]   --> src/lib.rs:51:5
[INFO] [stdout] test tests::can_generate_many_ids ... ok
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 50 | pub struct FastIdWorker {
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stderr]    |            ------------ field in this struct
[INFO] [stdout] 
[INFO] [stderr] 51 |     time_bits: usize,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `FastIdWorker` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `fastid` (lib) generated 1 warning
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:203:13
[INFO] [stderr]     |
[INFO] [stderr] 203 |         let mut worker = FastIdWorker::new(u64::MAX);
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:212:13
[INFO] [stderr]     |
[INFO] [stderr] 212 |         let mut worker = FastIdWorker::new(u64::MAX);
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `fastid` (lib test) generated 3 warnings (1 duplicate) (run `cargo fix --lib -p fastid --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fastid-a5727867b9458b14)
[INFO] [stderr]    Doc-tests fastid
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "89b329f6d3d6c82410930d33b134548e0ac2523cf43a84df770d5a293c2befb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89b329f6d3d6c82410930d33b134548e0ac2523cf43a84df770d5a293c2befb5", kill_on_drop: false }`
[INFO] [stdout] 89b329f6d3d6c82410930d33b134548e0ac2523cf43a84df770d5a293c2befb5