[INFO] fetching crate wordtop 0.1.6...
[INFO] testing wordtop-0.1.6 against try#33835004928d3bf65db4d4712e1330766263b0bd for pr-155739-1
[INFO] extracting crate wordtop 0.1.6 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate wordtop 0.1.6
[INFO] finished tweaking crates.io crate wordtop 0.1.6
[INFO] tweaked toml for crates.io crate wordtop 0.1.6 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate wordtop 0.1.6 on toolchain 33835004928d3bf65db4d4712e1330766263b0bd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate wordtop 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33835004928d3bf65db4d4712e1330766263b0bd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+33835004928d3bf65db4d4712e1330766263b0bd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a67db2ac04512e38330bdf4ed676528b5fb0ee73a6270a78b9912080360e0b6
[INFO] running `Command { std: "docker" "start" "-a" "1a67db2ac04512e38330bdf4ed676528b5fb0ee73a6270a78b9912080360e0b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a67db2ac04512e38330bdf4ed676528b5fb0ee73a6270a78b9912080360e0b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a67db2ac04512e38330bdf4ed676528b5fb0ee73a6270a78b9912080360e0b6", kill_on_drop: false }`
[INFO] [stdout] 1a67db2ac04512e38330bdf4ed676528b5fb0ee73a6270a78b9912080360e0b6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+33835004928d3bf65db4d4712e1330766263b0bd" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3acbe837c77509b904ade72234a828382a9d447d33ad24b398946344af20d4ad
[INFO] running `Command { std: "docker" "start" "-a" "3acbe837c77509b904ade72234a828382a9d447d33ad24b398946344af20d4ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling nix v0.23.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling ctrlc v3.2.1
[INFO] [stderr]    Compiling wordtop v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `sorted_vec` is never read
[INFO] [stdout]   --> src/calculate.rs:86:30
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]    |                              ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 87 |         sorted_vec = new_map.iter().collect(); // map to vector
[INFO] [stdout]    |         ---------- `sorted_vec` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sorted_vec` is never read
[INFO] [stdout]    --> src/calculate.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]     |                              ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 104 |         sorted_vec = rate_map.iter().collect(); // map to vector
[INFO] [stdout]     |         ---------- `sorted_vec` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/print.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 count = 0;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.97s
[INFO] running `Command { std: "docker" "inspect" "3acbe837c77509b904ade72234a828382a9d447d33ad24b398946344af20d4ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3acbe837c77509b904ade72234a828382a9d447d33ad24b398946344af20d4ad", kill_on_drop: false }`
[INFO] [stdout] 3acbe837c77509b904ade72234a828382a9d447d33ad24b398946344af20d4ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8ac70ec7769b893805981e9485291c12aaa634d10d330f2bfd94681aeed125a6
[INFO] running `Command { std: "docker" "start" "-a" "8ac70ec7769b893805981e9485291c12aaa634d10d330f2bfd94681aeed125a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling wordtop v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `sorted_vec` is never read
[INFO] [stdout]   --> src/calculate.rs:86:30
[INFO] [stdout]    |
[INFO] [stdout] 86 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]    |                              ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 87 |         sorted_vec = new_map.iter().collect(); // map to vector
[INFO] [stdout]    |         ---------- `sorted_vec` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sorted_vec` is never read
[INFO] [stdout]    --> src/calculate.rs:103:30
[INFO] [stdout]     |
[INFO] [stdout] 103 |         let mut sorted_vec = Vec::new();
[INFO] [stdout]     |                              ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 104 |         sorted_vec = rate_map.iter().collect(); // map to vector
[INFO] [stdout]     |         ---------- `sorted_vec` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count` is never read
[INFO] [stdout]   --> src/print.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |                 count = 0;
[INFO] [stdout]    |                 ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/print.rs:76:14
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[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/print.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[INFO] [stdout]    |                     ----^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k`
[INFO] [stdout]   --> src/print.rs:76:14
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[INFO] [stdout]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]   --> src/print.rs:76:21
[INFO] [stdout]    |
[INFO] [stdout] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[INFO] [stdout]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "8ac70ec7769b893805981e9485291c12aaa634d10d330f2bfd94681aeed125a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ac70ec7769b893805981e9485291c12aaa634d10d330f2bfd94681aeed125a6", kill_on_drop: false }`
[INFO] [stdout] 8ac70ec7769b893805981e9485291c12aaa634d10d330f2bfd94681aeed125a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+33835004928d3bf65db4d4712e1330766263b0bd" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e7a384dc8f253af78758b5aa426048d9515d66103be80d3928df11e94f318ae0
[INFO] running `Command { std: "docker" "start" "-a" "e7a384dc8f253af78758b5aa426048d9515d66103be80d3928df11e94f318ae0", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `sorted_vec` is never read
[INFO] [stderr]   --> src/calculate.rs:86:30
[INFO] [stderr]    |
[INFO] [stderr] 86 |         let mut sorted_vec = Vec::new();
[INFO] [stderr]    |                              ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stderr] 87 |         sorted_vec = new_map.iter().collect(); // map to vector
[INFO] [stderr]    |         ---------- `sorted_vec` is overwritten here before the previous value is read
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `sorted_vec` is never read
[INFO] [stderr]    --> src/calculate.rs:103:30
[INFO] [stderr]     |
[INFO] [stderr] 103 |         let mut sorted_vec = Vec::new();
[INFO] [stderr]     |                              ^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stderr] 104 |         sorted_vec = rate_map.iter().collect(); // map to vector
[INFO] [stderr]     |         ---------- `sorted_vec` is overwritten here before the previous value is read
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `count` is never read
[INFO] [stderr]   --> src/print.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 21 |                 count = 0;
[INFO] [stderr]    |                 ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/print.rs:76:14
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[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/print.rs:76:21
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[INFO] [stderr]    |                     ----^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `k`
[INFO] [stderr]   --> src/print.rs:76:14
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[INFO] [stderr]    |              ^^^^^ help: if this is intentional, prefix it with an underscore: `_k`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `t`
[INFO] [stderr]   --> src/print.rs:76:21
[INFO] [stderr]    |
[INFO] [stderr] 76 |         let (mut k, mut t) = print_stats(&x, 10, 10);
[INFO] [stderr]    |                     ^^^^^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stderr] 
[INFO] [stderr] warning: `wordtop` (bin "wordtop" test) generated 7 warnings (run `cargo fix --bin "wordtop" -p wordtop --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/wordtop-04262eb7f4d43d6d)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test calculate::tests::test_calculate_rate ... ok
[INFO] [stdout] test print::tests::test_print_stats ... ok
[INFO] [stdout] test calculate::tests::test_calculate_rate_top ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e7a384dc8f253af78758b5aa426048d9515d66103be80d3928df11e94f318ae0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a384dc8f253af78758b5aa426048d9515d66103be80d3928df11e94f318ae0", kill_on_drop: false }`
[INFO] [stdout] e7a384dc8f253af78758b5aa426048d9515d66103be80d3928df11e94f318ae0
