[INFO] cloning repository https://github.com/iljakuklic/cover
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/iljakuklic/cover" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Filjakuklic%2Fcover", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Filjakuklic%2Fcover'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] af613e74518207ac289c30e616d6dadf4fa54bc5
[INFO] testing iljakuklic/cover/af613e74518207ac289c30e616d6dadf4fa54bc5 against master#0d162b25edd5bf0dba9a22e83b614f1113e90474 for pr-150681-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Filjakuklic%2Fcover" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/iljakuklic/cover
[INFO] finished tweaking git repo https://github.com/iljakuklic/cover
[INFO] tweaked toml for git repo https://github.com/iljakuklic/cover written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/iljakuklic/cover on toolchain 0d162b25edd5bf0dba9a22e83b614f1113e90474
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "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" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]     Updating git repository `https://github.com/iljakuklic/sorted-iter`
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[INFO] [stderr]      Locking 27 packages to latest compatible versions
[INFO] [stderr]       Adding quickcheck v0.9.2 (available: v1.0.3)
[INFO] [stderr]       Adding quickcheck_macros v0.9.1 (available: v1.1.0)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_chacha v0.2.2
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[INFO] [stderr]   Downloaded wasi v0.9.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded phantom_newtype v0.2.0
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[INFO] [stderr]   Downloaded quickcheck_macros v0.9.1
[INFO] [stderr]   Downloaded rand v0.7.3
[INFO] [stderr]   Downloaded env_logger v0.7.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f448e898bec7c54b641cf05b4233378c12df7ba2af8757958798f4a8c5dd8b41
[INFO] running `Command { std: "docker" "start" "-a" "f448e898bec7c54b641cf05b4233378c12df7ba2af8757958798f4a8c5dd8b41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f448e898bec7c54b641cf05b4233378c12df7ba2af8757958798f4a8c5dd8b41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f448e898bec7c54b641cf05b4233378c12df7ba2af8757958798f4a8c5dd8b41", kill_on_drop: false }`
[INFO] [stdout] f448e898bec7c54b641cf05b4233378c12df7ba2af8757958798f4a8c5dd8b41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 953bfaa4ce6abf08cf2b86cfe0787ed82e84f6912b8805937fa5d98bfa9ea503
[INFO] running `Command { std: "docker" "start" "-a" "953bfaa4ce6abf08cf2b86cfe0787ed82e84f6912b8805937fa5d98bfa9ea503", kill_on_drop: false }`
[INFO] [stderr]    Compiling phantom_newtype v0.2.0
[INFO] [stderr]    Compiling sorted-iter v0.1.5 (https://github.com/iljakuklic/sorted-iter?branch=multiway-union#ec69da7c)
[INFO] [stderr]    Compiling cover v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias `Idx` is never used
[INFO] [stdout]  --> src/structs/binary_matrix.rs:8:6
[INFO] [stdout]   |
[INFO] [stdout] 8 | type Idx<I> = Id<I, u32>;
[INFO] [stdout]   |      ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `RowTag` is never used
[INFO] [stdout]   --> src/structs/binary_matrix.rs:12:10
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum RowTag {}
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ColTag` is never used
[INFO] [stdout]   --> src/structs/binary_matrix.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub enum ColTag {}
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `RowIdx` is never used
[INFO] [stdout]   --> src/structs/binary_matrix.rs:19:10
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub type RowIdx = Idx<RowTag>;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ColIdx` is never used
[INFO] [stdout]   --> src/structs/binary_matrix.rs:21:10
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub type ColIdx = Idx<ColTag>;
[INFO] [stdout]    |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Store` is never constructed
[INFO] [stdout]   --> src/structs/binary_matrix.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | struct Store<J, I> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/structs/binary_matrix.rs:40:8
[INFO] [stdout]     |
[INFO] [stdout]  37 | impl<J, I> Store<J, I> {
[INFO] [stdout]     | ---------------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  40 |     fn new_empty() -> Store<J, I> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  46 |     fn from_iter<Iter>(iter: Iter) -> Store<J, I>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  62 |     fn major_size(&self) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  67 |     fn minor_size(&self) -> u32 {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  73 |     fn major_idxs(&self) -> impl Iterator<Item = Idx<J>> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  78 |     fn get_major<'a>(&'a self, idx: Idx<J>) -> &'a[Idx<I>] {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  84 |     fn span_iter<'a>(&'a self) -> impl Iterator<Item = &'a[Idx<I>]> + 'a {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  89 |     fn ones_iter<'a>(&'a self)
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  97 |     fn transposed_cells_iter<'a>(&'a self)
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 105 |     fn transposed(&self) -> Store<I, J> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 109 |     const BRAILLE_START: char = '\u{2800}';
[INFO] [stdout]     |           ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 112 |     fn dump(&self) -> String {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 142 |     fn filtered<Pred: Fn(&(Idx<J>, Idx<I>)) -> bool>(&self, p: Pred) -> Self {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `BinaryMatrix` is never constructed
[INFO] [stdout]    --> src/structs/binary_matrix.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 | pub struct BinaryMatrix {
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_iter` and `from_rows` are never used
[INFO] [stdout]    --> src/structs/binary_matrix.rs:193:12
[INFO] [stdout]     |
[INFO] [stdout] 191 | impl BinaryMatrix {
[INFO] [stdout]     | ----------------- associated functions in this implementation
[INFO] [stdout] 192 |     /// Create a binary matrix from a sorted iterator over one-cell coordinates.
[INFO] [stdout] 193 |     pub fn from_iter<Iter>(it: Iter) -> Self 
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 199 |     fn from_rows(by_row: Store<RowTag, ColTag>) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IDMap` is never constructed
[INFO] [stdout]   --> src/structs/id_map.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct IDMap<ObjT, ID> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `lookup`, `get`, `back`, `items`, and `len` are never used
[INFO] [stdout]   --> src/structs/id_map.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | / impl<ObjT, ID> IDMap<ObjT, ID>
[INFO] [stdout] 17 | | where ObjT: Clone + Eq + std::hash::Hash, ID: Copy + From<usize> + Into<usize> {
[INFO] [stdout]    | |______________________________________________________________________________- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |       pub fn new() -> IDMap<ObjT, ID> {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |       pub fn lookup(&self, obj: &ObjT) -> Option<ID> {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |       pub fn get(&mut self, obj: &ObjT) -> ID {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |       pub fn back(&self, id: ID) -> &ObjT {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |       pub fn items(&self) -> impl Iterator<Item=(ID, &ObjT)> {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |       pub fn len(&self) -> usize {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "953bfaa4ce6abf08cf2b86cfe0787ed82e84f6912b8805937fa5d98bfa9ea503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "953bfaa4ce6abf08cf2b86cfe0787ed82e84f6912b8805937fa5d98bfa9ea503", kill_on_drop: false }`
[INFO] [stdout] 953bfaa4ce6abf08cf2b86cfe0787ed82e84f6912b8805937fa5d98bfa9ea503
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd82e77d2a0510d9512f3ad941c3f68caad8da18576697b76b503db738e6b387
[INFO] running `Command { std: "docker" "start" "-a" "bd82e77d2a0510d9512f3ad941c3f68caad8da18576697b76b503db738e6b387", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.179
[INFO] [stderr]    Compiling zerocopy v0.8.33
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cfg-if v1.0.4
[INFO] [stderr]    Compiling memchr v2.7.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.105
[INFO] [stderr]    Compiling quote v1.0.43
[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling unicode-ident v1.0.22
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling aho-corasick v1.1.4
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling quickcheck_macros v0.9.1
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling quickcheck v0.9.2
[INFO] [stderr]    Compiling cover v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `from_iter` is never used
[INFO] [stdout]    --> src/structs/binary_matrix.rs:193:12
[INFO] [stdout]     |
[INFO] [stdout] 191 | impl BinaryMatrix {
[INFO] [stdout]     | ----------------- associated function in this implementation
[INFO] [stdout] 192 |     /// Create a binary matrix from a sorted iterator over one-cell coordinates.
[INFO] [stdout] 193 |     pub fn from_iter<Iter>(it: Iter) -> Self 
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `IDMap` is never constructed
[INFO] [stdout]   --> src/structs/id_map.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct IDMap<ObjT, ID> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `lookup`, `get`, `back`, `items`, and `len` are never used
[INFO] [stdout]   --> src/structs/id_map.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | / impl<ObjT, ID> IDMap<ObjT, ID>
[INFO] [stdout] 17 | | where ObjT: Clone + Eq + std::hash::Hash, ID: Copy + From<usize> + Into<usize> {
[INFO] [stdout]    | |______________________________________________________________________________- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 20 |       pub fn new() -> IDMap<ObjT, ID> {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |       pub fn lookup(&self, obj: &ObjT) -> Option<ID> {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |       pub fn get(&mut self, obj: &ObjT) -> ID {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 41 |       pub fn back(&self, id: ID) -> &ObjT {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |       pub fn items(&self) -> impl Iterator<Item=(ID, &ObjT)> {
[INFO] [stdout]    |              ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |       pub fn len(&self) -> usize {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stdout]    --> src/structs/binary_matrix.rs:154:60
[INFO] [stdout]     |
[INFO] [stdout] 154 |         fn check(b: bool, err: &'static str) -> Result<(), &str> {
[INFO] [stdout]     |                                 -------                    ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                                 |
[INFO] [stdout]     |                                 the lifetime is named here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: consistently use `'static`
[INFO] [stdout]     |
[INFO] [stdout] 154 |         fn check(b: bool, err: &'static str) -> Result<(), &'static str> {
[INFO] [stdout]     |                                                             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 15.36s
[INFO] running `Command { std: "docker" "inspect" "bd82e77d2a0510d9512f3ad941c3f68caad8da18576697b76b503db738e6b387", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd82e77d2a0510d9512f3ad941c3f68caad8da18576697b76b503db738e6b387", kill_on_drop: false }`
[INFO] [stdout] bd82e77d2a0510d9512f3ad941c3f68caad8da18576697b76b503db738e6b387
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3eb9333fba640cb67ef41f4a713d1140d312cf15484931d8e1aa1940c6675c80
[INFO] running `Command { std: "docker" "start" "-a" "3eb9333fba640cb67ef41f4a713d1140d312cf15484931d8e1aa1940c6675c80", kill_on_drop: false }`
[INFO] [stderr] warning: associated function `from_iter` is never used
[INFO] [stderr]    --> src/structs/binary_matrix.rs:193:12
[INFO] [stderr]     |
[INFO] [stderr] 191 | impl BinaryMatrix {
[INFO] [stderr]     | ----------------- associated function in this implementation
[INFO] [stderr] 192 |     /// Create a binary matrix from a sorted iterator over one-cell coordinates.
[INFO] [stderr] 193 |     pub fn from_iter<Iter>(it: Iter) -> Self 
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `IDMap` is never constructed
[INFO] [stderr]   --> src/structs/id_map.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct IDMap<ObjT, ID> {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `lookup`, `get`, `back`, `items`, and `len` are never used
[INFO] [stderr]   --> src/structs/id_map.rs:20:12
[INFO] [stderr]    |
[INFO] [stderr] 16 | / impl<ObjT, ID> IDMap<ObjT, ID>
[INFO] [stderr] 17 | | where ObjT: Clone + Eq + std::hash::Hash, ID: Copy + From<usize> + Into<usize> {
[INFO] [stderr]    | |______________________________________________________________________________- associated items in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 20 |       pub fn new() -> IDMap<ObjT, ID> {
[INFO] [stderr]    |              ^^^
[INFO] [stderr] ...
[INFO] [stderr] 25 |       pub fn lookup(&self, obj: &ObjT) -> Option<ID> {
[INFO] [stderr]    |              ^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 30 |       pub fn get(&mut self, obj: &ObjT) -> ID {
[INFO] [stderr]    |              ^^^
[INFO] [stderr] ...
[INFO] [stderr] 41 |       pub fn back(&self, id: ID) -> &ObjT {
[INFO] [stderr]    |              ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 46 |       pub fn items(&self) -> impl Iterator<Item=(ID, &ObjT)> {
[INFO] [stderr]    |              ^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 51 |       pub fn len(&self) -> usize {
[INFO] [stderr]    |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: eliding a lifetime that's named elsewhere is confusing
[INFO] [stderr]    --> src/structs/binary_matrix.rs:154:60
[INFO] [stderr]     |
[INFO] [stderr] 154 |         fn check(b: bool, err: &'static str) -> Result<(), &str> {
[INFO] [stderr]     |                                 -------                    ^^^^ the same lifetime is elided here
[INFO] [stderr]     |                                 |
[INFO] [stderr]     |                                 the lifetime is named here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: consistently use `'static`
[INFO] [stderr]     |
[INFO] [stderr] 154 |         fn check(b: bool, err: &'static str) -> Result<(), &'static str> {
[INFO] [stderr]     |                                                             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `cover` (bin "cover" test) generated 4 warnings (run `cargo fix --bin "cover" -p cover --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/cover-8a7b29a23d22b86a)
[INFO] [stdout] 
[INFO] [stdout] running 15 tests
[INFO] [stdout] test structs::binary_matrix::test::unit_width2 ... ok
[INFO] [stdout] test structs::binary_matrix::test::unit_empty_valid ... ok
[INFO] [stdout] test structs::binary_matrix::test::unit_width0 ... ok
[INFO] [stdout] test structs::binary_matrix::test::unit_dump ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_filtered_valid ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_filtered_trivial_false ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_transposed_twice ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_filtered_trivial_true ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_transposed_model ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_filtered_model ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_transposed_valid ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_dump_popcount ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_arbitrary_valid ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_bycol_transposed ... ok
[INFO] [stdout] test structs::binary_matrix::test::qc_shrinked_valid ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 15 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.37s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3eb9333fba640cb67ef41f4a713d1140d312cf15484931d8e1aa1940c6675c80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3eb9333fba640cb67ef41f4a713d1140d312cf15484931d8e1aa1940c6675c80", kill_on_drop: false }`
[INFO] [stdout] 3eb9333fba640cb67ef41f4a713d1140d312cf15484931d8e1aa1940c6675c80
