[INFO] cloning repository https://github.com/Equilibris/mst125
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Equilibris/mst125" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEquilibris%2Fmst125", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEquilibris%2Fmst125'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 15e9deb0d2a65d000d376d5eb6084f468736df69
[INFO] testing Equilibris/mst125 against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEquilibris%2Fmst125" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Equilibris/mst125 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Equilibris/mst125
[INFO] finished tweaking git repo https://github.com/Equilibris/mst125
[INFO] tweaked toml for git repo https://github.com/Equilibris/mst125 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Equilibris/mst125 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da87c664748649ad1ed8dddba4aca75d5ee1f7b9e997860c8ca9368a3378e0c2
[INFO] running `Command { std: "docker" "start" "-a" "da87c664748649ad1ed8dddba4aca75d5ee1f7b9e997860c8ca9368a3378e0c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da87c664748649ad1ed8dddba4aca75d5ee1f7b9e997860c8ca9368a3378e0c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da87c664748649ad1ed8dddba4aca75d5ee1f7b9e997860c8ca9368a3378e0c2", kill_on_drop: false }`
[INFO] [stdout] da87c664748649ad1ed8dddba4aca75d5ee1f7b9e997860c8ca9368a3378e0c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea0cdd8e961ea0800e98a21b20ca05a6037a2fbd3d8f24066b832e0632043c1f
[INFO] running `Command { std: "docker" "start" "-a" "ea0cdd8e961ea0800e98a21b20ca05a6037a2fbd3d8f24066b832e0632043c1f", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling ou-mst125 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:1:68
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias,iter_collect_into, fn_traits, box_patterns, box_syntax)]
[INFO] [stdout]   |                                                                    ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:126:54
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), box Val(3)), box Val(10));
[INFO] [stdout]     |                                                      ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(Box::new(Val(1)), box Val(3)), box Val(10));
[INFO] [stdout]     |                                                      ~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:126:66
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), box Val(3)), box Val(10));
[INFO] [stdout]     |                                                                  ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), Box::new(Val(3))), box Val(10));
[INFO] [stdout]     |                                                                  ~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:126:46
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), box Val(3)), box Val(10));
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(Box::new(Add(box Val(1), box Val(3))), box Val(10));
[INFO] [stdout]     |                                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:126:79
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), box Val(3)), box Val(10));
[INFO] [stdout]     |                                                                               ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), box Val(3)), Box::new(Val(10)));
[INFO] [stdout]     |                                                                               ~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:136:52
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), box Var('x')), box Val(10));
[INFO] [stdout]     |                                                    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(Box::new(Val(5)), box Var('x')), box Val(10));
[INFO] [stdout]     |                                                    ~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:136:64
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), box Var('x')), box Val(10));
[INFO] [stdout]     |                                                                ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), Box::new(Var('x'))), box Val(10));
[INFO] [stdout]     |                                                                ~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:136:44
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), box Var('x')), box Val(10));
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(Box::new(Add(box Val(5), box Var('x'))), box Val(10));
[INFO] [stdout]     |                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:136:79
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), box Var('x')), box Val(10));
[INFO] [stdout]     |                                                                               ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), box Var('x')), Box::new(Val(10)));
[INFO] [stdout]     |                                                                               ~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/unit3.rs:89:18
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(Box::new(Var(a)), box Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout]    |                  ~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/unit3.rs:89:38
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(Box::new(Val(-quotient)), box Var(b))),
[INFO] [stdout]    |                                      ~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/unit3.rs:89:58
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout]    |                                                          ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(box Val(-quotient), Box::new(Var(b)))),
[INFO] [stdout]    |                                                          ~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/unit3.rs:89:30
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), Box::new(Mul(box Val(-quotient), box Var(b)))),
[INFO] [stdout]    |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias,iter_collect_into, fn_traits, box_patterns, box_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias,iter_collect_into, fn_traits, box_patterns, box_syntax)]
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias,iter_collect_into, fn_traits, box_patterns, box_syntax)]
[INFO] [stdout]   |                                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 16 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ou-mst125` (bin "ou-mst125") due to 17 previous errors
[INFO] running `Command { std: "docker" "inspect" "ea0cdd8e961ea0800e98a21b20ca05a6037a2fbd3d8f24066b832e0632043c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea0cdd8e961ea0800e98a21b20ca05a6037a2fbd3d8f24066b832e0632043c1f", kill_on_drop: false }`
[INFO] [stdout] ea0cdd8e961ea0800e98a21b20ca05a6037a2fbd3d8f24066b832e0632043c1f
[INFO] testing Equilibris/mst125 against beta-2023-12-22 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEquilibris%2Fmst125" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Equilibris/mst125 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Equilibris/mst125
[INFO] finished tweaking git repo https://github.com/Equilibris/mst125
[INFO] tweaked toml for git repo https://github.com/Equilibris/mst125 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Equilibris/mst125 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a45fa1d117eaa3e71d53a69c550325e17354b9617f86b5293054cc9dbd5314d
[INFO] running `Command { std: "docker" "start" "-a" "3a45fa1d117eaa3e71d53a69c550325e17354b9617f86b5293054cc9dbd5314d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a45fa1d117eaa3e71d53a69c550325e17354b9617f86b5293054cc9dbd5314d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a45fa1d117eaa3e71d53a69c550325e17354b9617f86b5293054cc9dbd5314d", kill_on_drop: false }`
[INFO] [stdout] 3a45fa1d117eaa3e71d53a69c550325e17354b9617f86b5293054cc9dbd5314d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1c70bfe83ff7d15b7729d6737c104e06f2201f7f09c5ee07439ddf91ea31808e
[INFO] running `Command { std: "docker" "start" "-a" "1c70bfe83ff7d15b7729d6737c104e06f2201f7f09c5ee07439ddf91ea31808e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling ou-mst125 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/main.rs:1:68
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias,iter_collect_into, fn_traits, box_patterns, box_syntax)]
[INFO] [stdout]   |                                                                    ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:126:54
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), box Val(3)), box Val(10));
[INFO] [stdout]     |                                                      ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(Box::new(Val(1)), box Val(3)), box Val(10));
[INFO] [stdout]     |                                                      ~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:126:66
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), box Val(3)), box Val(10));
[INFO] [stdout]     |                                                                  ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), Box::new(Val(3))), box Val(10));
[INFO] [stdout]     |                                                                  ~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:126:46
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), box Val(3)), box Val(10));
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(Box::new(Add(box Val(1), box Val(3))), box Val(10));
[INFO] [stdout]     |                                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:126:79
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), box Val(3)), box Val(10));
[INFO] [stdout]     |                                                                               ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 126 |         let mut expr: Algebra<i32, ()> = Mul(box Add(box Val(1), box Val(3)), Box::new(Val(10)));
[INFO] [stdout]     |                                                                               ~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:136:52
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), box Var('x')), box Val(10));
[INFO] [stdout]     |                                                    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(Box::new(Val(5)), box Var('x')), box Val(10));
[INFO] [stdout]     |                                                    ~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:136:64
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), box Var('x')), box Val(10));
[INFO] [stdout]     |                                                                ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), Box::new(Var('x'))), box Val(10));
[INFO] [stdout]     |                                                                ~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:136:44
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), box Var('x')), box Val(10));
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(Box::new(Add(box Val(5), box Var('x'))), box Val(10));
[INFO] [stdout]     |                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]    --> src/algebra.rs:136:79
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), box Var('x')), box Val(10));
[INFO] [stdout]     |                                                                               ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]     |
[INFO] [stdout] 136 |         let expr: Algebra<i32, char> = Mul(box Add(box Val(5), box Var('x')), Box::new(Val(10)));
[INFO] [stdout]     |                                                                               ~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/unit3.rs:89:18
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(Box::new(Var(a)), box Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout]    |                  ~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/unit3.rs:89:38
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(Box::new(Val(-quotient)), box Var(b))),
[INFO] [stdout]    |                                      ~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/unit3.rs:89:58
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout]    |                                                          ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(box Val(-quotient), Box::new(Var(b)))),
[INFO] [stdout]    |                                                          ~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: `box_syntax` has been removed
[INFO] [stdout]   --> src/unit3.rs:89:30
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), box Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: use `Box::new()` instead
[INFO] [stdout]    |
[INFO] [stdout] 89 |             &Add(box Var(a), Box::new(Mul(box Val(-quotient), box Var(b)))),
[INFO] [stdout]    |                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias,iter_collect_into, fn_traits, box_patterns, box_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias,iter_collect_into, fn_traits, box_patterns, box_syntax)]
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:43
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias,iter_collect_into, fn_traits, box_patterns, box_syntax)]
[INFO] [stdout]   |                                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 16 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ou-mst125` (bin "ou-mst125") due to 17 previous errors
[INFO] running `Command { std: "docker" "inspect" "1c70bfe83ff7d15b7729d6737c104e06f2201f7f09c5ee07439ddf91ea31808e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c70bfe83ff7d15b7729d6737c104e06f2201f7f09c5ee07439ddf91ea31808e", kill_on_drop: false }`
[INFO] [stdout] 1c70bfe83ff7d15b7729d6737c104e06f2201f7f09c5ee07439ddf91ea31808e
