[INFO] cloning repository https://github.com/GabrielDertoni/lambda-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/GabrielDertoni/lambda-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabrielDertoni%2Flambda-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabrielDertoni%2Flambda-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8cdcfa161e850613cbb5450aaaa6f42251af26d
[INFO] checking GabrielDertoni/lambda-lang against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FGabrielDertoni%2Flambda-lang" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/GabrielDertoni/lambda-lang on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/GabrielDertoni/lambda-lang
[INFO] finished tweaking git repo https://github.com/GabrielDertoni/lambda-lang
[INFO] tweaked toml for git repo https://github.com/GabrielDertoni/lambda-lang written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/GabrielDertoni/lambda-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b54fa6b4dee5f0a7326769b6c9b00782daeb8002b155d99a444e4986a1388b49
[INFO] running `Command { std: "docker" "start" "-a" "b54fa6b4dee5f0a7326769b6c9b00782daeb8002b155d99a444e4986a1388b49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b54fa6b4dee5f0a7326769b6c9b00782daeb8002b155d99a444e4986a1388b49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b54fa6b4dee5f0a7326769b6c9b00782daeb8002b155d99a444e4986a1388b49", kill_on_drop: false }`
[INFO] [stdout] b54fa6b4dee5f0a7326769b6c9b00782daeb8002b155d99a444e4986a1388b49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 020028f40acd3ab587b0c43aec68b601a3c401ce5fd9db5821b05569681570f9
[INFO] running `Command { std: "docker" "start" "-a" "020028f40acd3ab587b0c43aec68b601a3c401ce5fd9db5821b05569681570f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking rustyline v7.1.0
[INFO] [stderr]     Checking lambda-compiler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0437]: type `Ok` is not a member of trait `std::ops::Try`
[INFO] [stdout]  --> src/utils.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     type Ok = T;
[INFO] [stdout]   |     ^^^^^^^^^^^^ not a member of trait `std::ops::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0437]: type `Error` is not a member of trait `std::ops::Try`
[INFO] [stdout]  --> src/utils.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     type Error = T;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ not a member of trait `std::ops::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `into_result` is not a member of trait `std::ops::Try`
[INFO] [stdout]   --> src/utils.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     fn into_result(self) -> Result<Self::Ok, Self::Error> {
[INFO] [stdout] 11 | |         match self {
[INFO] [stdout] 12 | |             Self::Continue(val) => Ok(val),
[INFO] [stdout] 13 | |             Self::Done(val) => Err(val),
[INFO] [stdout] 14 | |         }
[INFO] [stdout] 15 | |     }
[INFO] [stdout]    | |_____^ not a member of trait `std::ops::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `from_ok` is not a member of trait `std::ops::Try`
[INFO] [stdout]   --> src/utils.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     fn from_ok(v: Self::Ok) -> Self {
[INFO] [stdout] 18 | |         Self::Continue(v)
[INFO] [stdout] 19 | |     }
[INFO] [stdout]    | |_____^ not a member of trait `std::ops::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `from_error` is not a member of trait `std::ops::Try`
[INFO] [stdout]   --> src/utils.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     fn from_error(v: Self::Error) -> Self {
[INFO] [stdout] 22 | |         Self::Done(v)
[INFO] [stdout] 23 | |     }
[INFO] [stdout]    | |_____^ not a member of trait `std::ops::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]  --> src/utils.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> std::ops::Try for TryFold<T> {
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout]   = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0437]: type `Ok` is not a member of trait `std::ops::Try`
[INFO] [stdout]  --> src/utils.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     type Ok = T;
[INFO] [stdout]   |     ^^^^^^^^^^^^ not a member of trait `std::ops::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `lambda-compiler` due to 11 previous errors
[INFO] [stdout] error[E0220]: associated type `Ok` not found for `Self`
[INFO] [stdout]   --> src/utils.rs:10:42
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn into_result(self) -> Result<Self::Ok, Self::Error> {
[INFO] [stdout]    |                                          ^^ associated type `Ok` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0220]: associated type `Error` not found for `Self`
[INFO] [stdout]   --> src/utils.rs:10:52
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn into_result(self) -> Result<Self::Ok, Self::Error> {
[INFO] [stdout]    |                                                    ^^^^^ associated type `Error` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Ok` not found for `Self`
[INFO] [stdout]   --> src/utils.rs:17:25
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn from_ok(v: Self::Ok) -> Self {
[INFO] [stdout]    |                         ^^ associated type `Ok` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Error` not found for `Self`
[INFO] [stdout]   --> src/utils.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn from_error(v: Self::Error) -> Self {
[INFO] [stdout]    |                            ^^^^^ associated type `Error` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0220, E0407, E0437, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0220`.
[INFO] [stdout] 
[INFO] [stdout] error[E0437]: type `Error` is not a member of trait `std::ops::Try`
[INFO] [stdout]  --> src/utils.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     type Error = T;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^ not a member of trait `std::ops::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `into_result` is not a member of trait `std::ops::Try`
[INFO] [stdout]   --> src/utils.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | /     fn into_result(self) -> Result<Self::Ok, Self::Error> {
[INFO] [stdout] 11 | |         match self {
[INFO] [stdout] 12 | |             Self::Continue(val) => Ok(val),
[INFO] [stdout] 13 | |             Self::Done(val) => Err(val),
[INFO] [stdout] 14 | |         }
[INFO] [stdout] 15 | |     }
[INFO] [stdout]    | |_____^ not a member of trait `std::ops::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `from_ok` is not a member of trait `std::ops::Try`
[INFO] [stdout]   --> src/utils.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     fn from_ok(v: Self::Ok) -> Self {
[INFO] [stdout] 18 | |         Self::Continue(v)
[INFO] [stdout] 19 | |     }
[INFO] [stdout]    | |_____^ not a member of trait `std::ops::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0407]: method `from_error` is not a member of trait `std::ops::Try`
[INFO] [stdout]   --> src/utils.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | /     fn from_error(v: Self::Error) -> Self {
[INFO] [stdout] 22 | |         Self::Done(v)
[INFO] [stdout] 23 | |     }
[INFO] [stdout]    | |_____^ not a member of trait `std::ops::Try`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'try_trait_v2'
[INFO] [stdout]  --> src/utils.rs:6:9
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<T> std::ops::Try for TryFold<T> {
[INFO] [stdout]   |         ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #84277 <https://github.com/rust-lang/rust/issues/84277> for more information
[INFO] [stdout]   = help: add `#![feature(try_trait_v2)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Ok` not found for `Self`
[INFO] [stdout]   --> src/utils.rs:10:42
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn into_result(self) -> Result<Self::Ok, Self::Error> {
[INFO] [stdout]    |                                          ^^ associated type `Ok` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Error` not found for `Self`
[INFO] [stdout]   --> src/utils.rs:10:52
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn into_result(self) -> Result<Self::Ok, Self::Error> {
[INFO] [stdout]    |                                                    ^^^^^ associated type `Error` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Ok` not found for `Self`
[INFO] [stdout]   --> src/utils.rs:17:25
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn from_ok(v: Self::Ok) -> Self {
[INFO] [stdout]    |                         ^^ associated type `Ok` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0220]: associated type `Error` not found for `Self`
[INFO] [stdout]   --> src/utils.rs:21:28
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn from_error(v: Self::Error) -> Self {
[INFO] [stdout]    |                            ^^^^^ associated type `Error` not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0220, E0407, E0437, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0220`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "020028f40acd3ab587b0c43aec68b601a3c401ce5fd9db5821b05569681570f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "020028f40acd3ab587b0c43aec68b601a3c401ce5fd9db5821b05569681570f9", kill_on_drop: false }`
[INFO] [stdout] 020028f40acd3ab587b0c43aec68b601a3c401ce5fd9db5821b05569681570f9