[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] checking Equilibris/mst125 against try#6713fa75964eb229409a9c6f6f5c418423e313ff for pr-133502-22
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEquilibris%2Fmst125" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[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-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Equilibris/mst125 on toolchain 6713fa75964eb229409a9c6f6f5c418423e313ff
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6713fa75964eb229409a9c6f6f5c418423e313ff" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+6713fa75964eb229409a9c6f6f5c418423e313ff" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+6713fa75964eb229409a9c6f6f5c418423e313ff" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f95700e8a425a360fd3af14e95fabf83dbf145739a020eda6b80781a41bde0a9
[INFO] running `Command { std: "docker" "start" "-a" "f95700e8a425a360fd3af14e95fabf83dbf145739a020eda6b80781a41bde0a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f95700e8a425a360fd3af14e95fabf83dbf145739a020eda6b80781a41bde0a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f95700e8a425a360fd3af14e95fabf83dbf145739a020eda6b80781a41bde0a9", kill_on_drop: false }`
[INFO] [stdout] f95700e8a425a360fd3af14e95fabf83dbf145739a020eda6b80781a41bde0a9
[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" "+6713fa75964eb229409a9c6f6f5c418423e313ff" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eea9354ef1118666819107f4997c909d5f8b27c5e7f830ff859faac751b124a5
[INFO] running `Command { std: "docker" "start" "-a" "eea9354ef1118666819107f4997c909d5f8b27c5e7f830ff859faac751b124a5", kill_on_drop: false }`
[INFO] [stderr]     Checking num-traits v0.2.15
[INFO] [stderr]     Checking 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: removed in 1.70.0; see <https://github.com/rust-lang/rust/pull/108471> for more information
[INFO] [stdout]   = note: replaced with `#[rustc_box]`
[INFO] [stdout] 
[INFO] [stdout] 
[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: removed in 1.70.0; see <https://github.com/rust-lang/rust/pull/108471> for more information
[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 Val(1), box Val(3)), box Val(10));
[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 Val(3)), box Val(10));
[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:126:54
[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 Val(1), box Val(3)), box Val(10));
[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 Val(3)), box Val(10));
[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 Add(box Val(1), box Val(3)), box Val(10));
[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 Val(10));
[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 Val(5), box Var('x')), box Val(10));
[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 Var('x')), box Val(10));
[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 Add(box Val(5), box Var('x')), box Val(10));
[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: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 Add(box Val(1), box Val(3)), box Val(10));
[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: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 Val(10));
[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/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 Val(10));
[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 Val(5), box Var('x')), box Val(10));
[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 Var('x')), box Val(10));
[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 Add(box Val(5), box Var('x')), box Val(10));
[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/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 Var(a), box Mul(box Val(-quotient), box Var(b))),
[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/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 Val(10));
[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:89:38
[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 Val(-quotient), box Var(b))),
[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 Var(b))),
[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 Mul(box Val(-quotient), box Var(b))),
[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: `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 Var(a), box Mul(box Val(-quotient), box Var(b))),
[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 Val(-quotient), box Var(b))),
[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 Var(b))),
[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 Mul(box Val(-quotient), box Var(b))),
[INFO] [stdout] 89 +             &Add(box Var(a), Box::new(Mul(box Val(-quotient), box Var(b)))),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ou-mst125` (bin "ou-mst125") due to 13 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ou-mst125` (bin "ou-mst125" test) due to 13 previous errors
[INFO] running `Command { std: "docker" "inspect" "eea9354ef1118666819107f4997c909d5f8b27c5e7f830ff859faac751b124a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eea9354ef1118666819107f4997c909d5f8b27c5e7f830ff859faac751b124a5", kill_on_drop: false }`
[INFO] [stdout] eea9354ef1118666819107f4997c909d5f8b27c5e7f830ff859faac751b124a5
