[INFO] fetching crate exms 0.2.17...
[INFO] testing exms-0.2.17 against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] extracting crate exms 0.2.17 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate exms 0.2.17
[INFO] finished tweaking crates.io crate exms 0.2.17
[INFO] tweaked toml for crates.io crate exms 0.2.17 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate exms 0.2.17 on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "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" "+9f93af291970322f4f1c6315ccde4d7078201159" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 107 packages to latest compatible versions
[INFO] [stderr]       Adding colored v2.2.0 (available: v3.0.0)
[INFO] [stderr]       Adding criterion v0.5.1 (available: v0.7.0)
[INFO] [stderr]       Adding toml v0.8.23 (available: v0.9.8)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bad15292e70d862f0a6cab82d002211d8f056298822506ab9917752b5c9e3f6c
[INFO] running `Command { std: "docker" "start" "-a" "bad15292e70d862f0a6cab82d002211d8f056298822506ab9917752b5c9e3f6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bad15292e70d862f0a6cab82d002211d8f056298822506ab9917752b5c9e3f6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bad15292e70d862f0a6cab82d002211d8f056298822506ab9917752b5c9e3f6c", kill_on_drop: false }`
[INFO] [stdout] bad15292e70d862f0a6cab82d002211d8f056298822506ab9917752b5c9e3f6c
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e177d92812ca3f11aef82596293ce9e7af48a8d093f7b2865a82828fba87493a
[INFO] running `Command { std: "docker" "start" "-a" "e177d92812ca3f11aef82596293ce9e7af48a8d093f7b2865a82828fba87493a", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling proc-macro2 v1.0.103
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling winnow v0.7.13
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[INFO] [stderr]    Compiling colored v2.2.0
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[INFO] [stderr]    Compiling encode_unicode v1.0.0
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[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling is-terminal v0.4.17
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling term v0.7.0
[INFO] [stderr]    Compiling drawille v0.3.0
[INFO] [stderr]    Compiling termplot v0.1.1
[INFO] [stderr]    Compiling syn v2.0.109
[INFO] [stderr]    Compiling indexmap v2.12.0
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling prettytable v0.10.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]    Compiling toml v0.8.23
[INFO] [stderr]    Compiling exms v0.2.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.33s
[INFO] running `Command { std: "docker" "inspect" "e177d92812ca3f11aef82596293ce9e7af48a8d093f7b2865a82828fba87493a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e177d92812ca3f11aef82596293ce9e7af48a8d093f7b2865a82828fba87493a", kill_on_drop: false }`
[INFO] [stdout] e177d92812ca3f11aef82596293ce9e7af48a8d093f7b2865a82828fba87493a
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f84e55c2dc40f8ddd4d195ce45555ef3771d7c2f62f51b79a058d23c2c543577
[INFO] running `Command { std: "docker" "start" "-a" "f84e55c2dc40f8ddd4d195ce45555ef3771d7c2f62f51b79a058d23c2c543577", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling zerocopy v0.8.27
[INFO] [stderr]    Compiling either v1.15.0
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[INFO] [stderr]    Compiling regex-syntax v0.8.8
[INFO] [stderr]    Compiling plotters-backend v0.3.7
[INFO] [stderr]    Compiling ciborium-io v0.2.2
[INFO] [stderr]    Compiling syn v2.0.109
[INFO] [stderr]    Compiling cast v0.3.0
[INFO] [stderr]    Compiling oorandom v11.1.5
[INFO] [stderr]    Compiling anes v0.1.6
[INFO] [stderr]    Compiling assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling clap_builder v4.5.51
[INFO] [stderr]    Compiling plotters-svg v0.3.7
[INFO] [stderr]    Compiling itertools v0.10.5
[INFO] [stderr]    Compiling rayon v1.11.0
[INFO] [stderr]    Compiling plotters v0.3.7
[INFO] [stderr]    Compiling regex-automata v0.4.13
[INFO] [stderr]    Compiling criterion-plot v0.5.0
[INFO] [stderr]    Compiling clap v4.5.51
[INFO] [stderr]    Compiling indexmap v2.12.0
[INFO] [stderr]    Compiling serde_json v1.0.145
[INFO] [stderr]    Compiling csv v1.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling zerocopy-derive v0.8.27
[INFO] [stderr]    Compiling prettytable v0.10.0
[INFO] [stderr]    Compiling regex v1.12.2
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling serde_spanned v0.6.9
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling criterion v0.5.1
[INFO] [stderr]    Compiling toml v0.8.23
[INFO] [stderr]    Compiling exms v0.2.17 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 29.39s
[INFO] running `Command { std: "docker" "inspect" "f84e55c2dc40f8ddd4d195ce45555ef3771d7c2f62f51b79a058d23c2c543577", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f84e55c2dc40f8ddd4d195ce45555ef3771d7c2f62f51b79a058d23c2c543577", kill_on_drop: false }`
[INFO] [stdout] f84e55c2dc40f8ddd4d195ce45555ef3771d7c2f62f51b79a058d23c2c543577
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2c6b2b9bc8f67a8e2e853f461c8b4653f4732ccd80b34eb2004f38d791b6d032
[INFO] running `Command { std: "docker" "start" "-a" "2c6b2b9bc8f67a8e2e853f461c8b4653f4732ccd80b34eb2004f38d791b6d032", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/exms-76f2621d3b561d3a)
[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] [stderr]    Doc-tests exms
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::histogram (line 296) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 10) - compile ... ok
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::filter_by_name (line 183) ... FAILED
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::sort_by_alphabetic_order (line 156) ... FAILED
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::from_file (line 62) - compile ... ok
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::filter_by_file (line 217) - compile ... ok
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::sort_by_grade (line 126) ... FAILED
[INFO] [stdout] test src/lib.rs - (line 83) - compile fail ... ok
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::summary (line 275) ... ok
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::students (line 253) ... ok
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::set_max_grade (line 83) ... ok
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::new (line 30) ... ok
[INFO] [stdout] test src/exam/mod.rs - exam::Exam::set_title (line 105) ... ok
[INFO] [stdout] test src/exam/student.rs - exam::student::Student::new (line 19) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/exam/mod.rs - exam::Exam::histogram (line 296) stdout ----
[INFO] [stdout] error[E0061]: this method takes 1 argument but 0 arguments were supplied
[INFO] [stdout]    --> src/exam/mod.rs:308:6
[INFO] [stdout]     |
[INFO] [stdout]  15 | exam.histogram();
[INFO] [stdout]     |      ^^^^^^^^^-- argument #1 of type `Option<f64>` is missing
[INFO] [stdout]     |
[INFO] [stdout] note: method defined here
[INFO] [stdout]    --> /opt/rustwide/workdir/src/exam/mod.rs:309:12
[INFO] [stdout]     |
[INFO] [stdout] 309 |     pub fn histogram(&self, step: Option<f64>) {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] help: provide the argument
[INFO] [stdout]     |
[INFO] [stdout]  15 | exam.histogram(/* Option<f64> */);
[INFO] [stdout]     |                +++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0061`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/exam/mod.rs - exam::Exam::filter_by_name (line 183) stdout ----
[INFO] [stdout] error[E0616]: field `students` of struct `Exam` is private
[INFO] [stdout]   --> src/exam/mod.rs:197:17
[INFO] [stdout]    |
[INFO] [stdout] 17 | assert_eq!(exam.students.len(), 2);
[INFO] [stdout]    |                 ^^^^^^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `students` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 17 | assert_eq!(exam.students().len(), 2);
[INFO] [stdout]    |                         ++
[INFO] [stdout] 
[INFO] [stdout] error[E0616]: field `students` of struct `Exam` is private
[INFO] [stdout]   --> src/exam/mod.rs:198:17
[INFO] [stdout]    |
[INFO] [stdout] 18 | assert_eq!(exam.students[0].name, "Joan Beltrán Peris");
[INFO] [stdout]    |                 ^^^^^^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `students` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 18 | assert_eq!(exam.students()[0].name, "Joan Beltrán Peris");
[INFO] [stdout]    |                         ++
[INFO] [stdout] 
[INFO] [stdout] error[E0616]: field `students` of struct `Exam` is private
[INFO] [stdout]   --> src/exam/mod.rs:199:17
[INFO] [stdout]    |
[INFO] [stdout] 19 | assert_eq!(exam.students[1].name, "David Jiménez Hidalgo");
[INFO] [stdout]    |                 ^^^^^^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `students` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 19 | assert_eq!(exam.students()[1].name, "David Jiménez Hidalgo");
[INFO] [stdout]    |                         ++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0616`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/exam/mod.rs - exam::Exam::sort_by_alphabetic_order (line 156) stdout ----
[INFO] [stdout] error[E0616]: field `students` of struct `Exam` is private
[INFO] [stdout]   --> src/exam/mod.rs:170:17
[INFO] [stdout]    |
[INFO] [stdout] 17 | assert_eq!(exam.students[0].name, "David Jiménez Hidalgo");
[INFO] [stdout]    |                 ^^^^^^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `students` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 17 | assert_eq!(exam.students()[0].name, "David Jiménez Hidalgo");
[INFO] [stdout]    |                         ++
[INFO] [stdout] 
[INFO] [stdout] error[E0616]: field `students` of struct `Exam` is private
[INFO] [stdout]   --> src/exam/mod.rs:171:17
[INFO] [stdout]    |
[INFO] [stdout] 18 | assert_eq!(exam.students[1].name, "Joan Beltrán Peris");
[INFO] [stdout]    |                 ^^^^^^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `students` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 18 | assert_eq!(exam.students()[1].name, "Joan Beltrán Peris");
[INFO] [stdout]    |                         ++
[INFO] [stdout] 
[INFO] [stdout] error[E0616]: field `students` of struct `Exam` is private
[INFO] [stdout]   --> src/exam/mod.rs:172:17
[INFO] [stdout]    |
[INFO] [stdout] 19 | assert_eq!(exam.students[2].name, "Jose Abad Martínez");
[INFO] [stdout]    |                 ^^^^^^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `students` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 19 | assert_eq!(exam.students()[2].name, "Jose Abad Martínez");
[INFO] [stdout]    |                         ++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0616`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/exam/mod.rs - exam::Exam::sort_by_grade (line 126) stdout ----
[INFO] [stdout] error[E0616]: field `students` of struct `Exam` is private
[INFO] [stdout]   --> src/exam/mod.rs:140:17
[INFO] [stdout]    |
[INFO] [stdout] 17 | assert_eq!(exam.students[0].grade, 7.94);
[INFO] [stdout]    |                 ^^^^^^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `students` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 17 | assert_eq!(exam.students()[0].grade, 7.94);
[INFO] [stdout]    |                         ++
[INFO] [stdout] 
[INFO] [stdout] error[E0616]: field `students` of struct `Exam` is private
[INFO] [stdout]   --> src/exam/mod.rs:141:17
[INFO] [stdout]    |
[INFO] [stdout] 18 | assert_eq!(exam.students[1].grade, 4.6);
[INFO] [stdout]    |                 ^^^^^^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `students` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 18 | assert_eq!(exam.students()[1].grade, 4.6);
[INFO] [stdout]    |                         ++
[INFO] [stdout] 
[INFO] [stdout] error[E0616]: field `students` of struct `Exam` is private
[INFO] [stdout]   --> src/exam/mod.rs:142:17
[INFO] [stdout]    |
[INFO] [stdout] 19 | assert_eq!(exam.students[2].grade, 3.6);
[INFO] [stdout]    |                 ^^^^^^^^ private field
[INFO] [stdout]    |
[INFO] [stdout] help: a method `students` also exists, call it with parentheses
[INFO] [stdout]    |
[INFO] [stdout] 19 | assert_eq!(exam.students()[2].grade, 3.6);
[INFO] [stdout]    |                         ++
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0616`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/exam/mod.rs - exam::Exam::filter_by_name (line 183)
[INFO] [stdout]     src/exam/mod.rs - exam::Exam::histogram (line 296)
[INFO] [stdout]     src/exam/mod.rs - exam::Exam::sort_by_alphabetic_order (line 156)
[INFO] [stdout]     src/exam/mod.rs - exam::Exam::sort_by_grade (line 126)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 10 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.90s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "2c6b2b9bc8f67a8e2e853f461c8b4653f4732ccd80b34eb2004f38d791b6d032", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c6b2b9bc8f67a8e2e853f461c8b4653f4732ccd80b34eb2004f38d791b6d032", kill_on_drop: false }`
[INFO] [stdout] 2c6b2b9bc8f67a8e2e853f461c8b4653f4732ccd80b34eb2004f38d791b6d032
